- Jack - 2013-05-13T16:04:08
Can the Sprint Samsung s4 be unlocked?
- atv - 2013-05-14T22:41:38
Can the AT&T and T-mobile be unlocked?
- raydshine - 2013-05-16T13:27:43
Can the Orange (FRANCE) Samsung S4 be unlocked ?
- FastGSM - 2013-05-17T06:49:55
Yes, you can use the software unlocking method or the "
Samsung Unlock via IMEI - EUROPE Networks" service.
- Mariosu Fave - 2013-05-17T01:52:17
Can it also unlock Samsung S4 i9500 - Digicel, Papua New Guinea
- jaime - 2013-05-21T00:39:51
Hi how are you? i have a cuestion mybe you can help me. I have a Samsung galaxy s4 i337M from Telcel in Mexico, and as you say in you page, it is hard locked. it says Network lock and a Dismiss button, with no box to enter an unlock code.
I want to unlocked so i can use it in another company.
Do you know if you can help me how to do it, I really apriciate.
- FastGSM - 2013-05-21T15:19:41
Hello, hardlocked phones are not supported, sorry. You can see that in our detailed instructions. If it's not possible to enter the unlock code, it's not possible to unlock the phone, unfortunately.
- Alan - 2013-08-04T23:31:55
You should try using the *#0011# number... google it, if its from telcel mexico then it should be the I9500 so you can do it by this method
- King Mufasa - 2013-05-23T21:04:50
Can the japan docomo SC-04E samsung galaxy S4 can be unlock
- King Mufasa - 2013-05-23T21:07:38
Can japan softbank iphone4 baseband 08.11.04 and iphone5
- Murilo Fazio - 2013-05-24T19:54:55
can i use this for brazil ? it`s gonna work the 3g and the 4g ?
- ZooZooBubble - 2013-05-25T10:04:36
Can I unlock the networks for Samsung Galaxy S4 in Sweden?
- alberto - 2013-05-26T22:28:55
Can i unlock the network for galaxy s4 company claro, El salvador?
- WINNIE - 2013-05-30T02:14:34
can this unlock sph-l720?
- FastGSM - 2013-05-30T09:14:22
Hi, USB unlock is not possible. Maybe via unlocking codes but you have to be sure it's a GSM phone and it asks for "SIM Network Unlock PIN" when you insert a non accepted SIM card. Otherwise it would not be possible to enter the unlock code, even if you get it.
- Anthony - 2013-06-01T08:29:38
Hello I was wondering can I unlock my sprint galaxy s4 in san antonio tx using your unlocking service?
- Ashraf Ibrahim - 2013-06-08T04:37:06
Can you guys unlock blacklisted phones?
- FastGSM - 2013-06-09T11:58:00
Hi, blacklisted phones are not supported. Even if you could unlock such phone, it will most probably not work.
- Renato - 2013-06-25T23:26:11
Don't listen to this. If you bought a blacklisted phone from the US from t-mobile or at&t that use sim card and you are planning on using it in another country the unlock will work. But won't work on any US service provider.
- KAZ - 2013-06-09T12:54:04
Hi..what is the difference between all the references for the S4?
- JYEP - 2013-06-09T15:30:07
In order to do this unlock do I need to have the new sim card already?
- JYEP - 2013-06-09T15:50:39
What im saying is that, im about to get the phone, still just waiting for this issue of unlocking to be adressed first. But I plan on using it on carier for a couple of months before I need it unlocked. I wont get the new simcard until I need to use the phone already, Im asking do I need the new sim card/what do I need to do, to get the phone to ask me for the unlock code?
- Richard Smart - 2013-06-14T00:41:07
Can you unlock the sprint SPHL720BKK with this method?
- FastGSM - 2013-06-14T07:17:17
Hi, I'm afraid it's not possible, that's most probably a CDMA model. Samsung Galaxy S4 can be unlocked only if you see "SIM Network Unlock PIN" message on your screen when you power on the phone with a different network SIM card.
- Rodger - 2013-06-14T06:11:27
Hi, if I buy the Unlock Software for $14.99, can it be used on more than one phone? (Ex. Mine and my wife)
- Fatima - 2013-06-18T23:47:39
I have a sprint samsung galaxy s4..model number sph-l720.. Can you unlock it
- luige - 2013-06-24T19:46:15
I bought a Samsumg galaxy s4 from USA. I would like to use in Brazil.
Is it possible unlock it?
If possible, which is the procedure to buy the code?
- Flow - 2013-07-03T02:23:08
I have a tmobile galaxy s4 for tmobile but I took it to the store and they told me is reported stolen, can I still use your software to unlock the phone to any carrier?
- will - 2013-07-06T01:08:14
I have a SHP L720 SPRINT. WHEN I PUT OTHER SIM CARD . SAYS. INVALID SIM CARD. DO U THINK THAT U UNLOCK METHOD CAN WORK WITH MY CELLPHONE?
- tee - 2013-07-08T01:56:27
what if u have no sim card how would i unblock a phone?
- AUnlocker - 2013-07-12T15:22:51
Is the USB/software version 14.99 per phone? I have two phones to unlock...
- king - 2013-07-14T04:23:47
hi I just unlocked my Samsung galaxy s4 by the Samsung Galaxy S4 Unlocking Software and if I want to factory reset my phone, will my phone still be unlocked or do I have to unlock the phone again? thx
- FastGSM - 2013-07-14T06:52:24
Hi, the phone should stay unlocked. Even if it gets locked again, you can use the codes already retrieved by the unlocking client. If there's any problem, please contact email@example.com
- josie - 2013-07-16T23:44:58
Hey, is it possible to unlock the sprint galaxy s4?
- Vitor - 2013-07-17T03:05:09
I have a galaxy S4 from T Mobile and i want to use it in Brazil, i need the SIM network unlock code for it...waht i need to buy for unlock it
- pepe - 2013-07-18T11:34:08
Hello Staff, you can unlock Galaxy S4 M919 via IMEI from Tmobile USA ???
- filiberto - 2013-07-20T05:05:15
Will it work for the verizon model?
- Kareem Calliste - 2013-07-21T18:02:42
can u unlock samsung glaxy S4 active
- oliver - 2013-07-24T10:11:49
i have a samsung galaxy s4 they i buy from ebay. the phone is locket to sprint. the saller wrote that is have a bed imei. how can i open it to sim free?
- Avi - 2013-07-26T06:03:45
Hi I have a T mobile Samsung Galaxy S4 M919 can you unlock it? which method can be used ? Can it be done using
Unlock Samsung Galaxy S4 via Network Code ?
- Juan - 2013-07-28T09:18:14
I have a sprint samsung galaxy s4..model number sph-l720.. Can you unlock it
- pvinodnayak - 2013-07-30T17:40:19
Can your code unlock a Sprint S4 SPH-L720 GSM Section of the phone? to work in INDIA any network ?
i was able to get "enter control key" popup upon running a command in terminal emulator.
- FastGSM - 2013-07-31T06:48:19
Hi, well the service unlocks "SIM Network Unlock PIN" or "Enter Network Lock Control Key" message when you insert a different network SIM card. If that's the case, you can use the "Samsung Unlock via IMEI - USA Carriers" service. Otherwise I'm afraid the unlocking is not possible.
- Yoshi777 - 2013-08-03T01:36:07
Can you unlock the t-mobile galaxy s4 m919 with the new uvamdl firmware? Which method works?
- FastGSM - 2013-08-04T14:51:54
Hi, if you use the Unlock Code methods, the firmware version doesn't matter. If you use the unlocking software and there's a problem, please contact firstname.lastname@example.org. Thank you.
- Pedro - 2013-08-03T22:30:37
how can you unlock a sprint galaxy s4 model SPH-L720? i looked everywhere and i can't find it
- Leo - 2013-08-04T06:14:47
Hi. I have a S4 from Tmobile, M919 model. It doesn t show the message and the box to put code because i did that fere unlock found in the xda developers forum , but sometimes it says that there s no SIM card . Does any of these procedures work in that case ??
- Sergio - 2013-08-06T22:07:05
Hello, I have the at&t galaxy s4, and I bought the unlock code from a different source but when I enter it, I get the message "Network unlock request unsuccessful". My IMEI is 356567053484570 unlock code 57186203. Can you tell me if you have a different code for me, I dont want to buy it again and receive the same code. Thank you
- Oscar Reyes Areche - 2013-08-07T21:48:48
Unlock Sprint S4 ? FOR and GSM carries
- khaled - 2013-08-10T15:58:46
Hai I want to unlock a Galaxy S 4 from sprint sph-l720
- Chris - 2013-08-12T06:25:25
Hello, I was wondering if the unlocking software will work with a Verizon Wireless Galaxy s4 (SCH-I545)
- Lilbit - 2013-08-13T01:46:46
I have the samsung galaxy s4 and it's telling me enter sim network unlock pin....
- Nam - 2013-08-13T08:02:09
I have a Galaxy S4 (SC-04E) of Docomo and in Vietnam now, I want to use Vietnam mobile network such as Mobifone, Vinaphone by this device but my device is locked by Docomo at the moment. Please advice can we do it and how. Thank you very much.
- gerardoher - 2013-08-14T18:17:53
Hey staff is it possible to unlock a blacklist galaxy s4 that has been reported lost? and to be used again for tmobile ?
- Cameron - 2013-08-14T21:51:46
Can the Sprint Samsung Galaxy S4 be unlocked?
- Cliff - 2013-08-15T01:11:28
Hello, i have a Samsung galaxy s4 SPH-L720 can it unlock with the usb unlocking service you have?
- jessica knowles - 2013-08-22T02:21:38
i have a samsung SPH-L720 ( usa sprint ) will this unlock work for me
- FastGSM - 2013-08-22T07:47:53
Hi, Sprint models cannot be unlocked, sorry. You can see on this page what unlocking is for: it removes SIM Network Unlock PIN or Enter Network Lock Control Key message. CDMA phones don't show such screen and cannot be unlocked.
- joyce - 2013-08-22T05:24:26
i have a samsung galaxy s4 from t-mobile usa and they have sent me the unlock code already. but after inserting 4 sim cards from other carrier, restarting or even doing "restore factory setting" still my phone is not asking me for the unlock code. could you help me unlock my phone?
- FastGSM - 2013-08-22T07:49:54
Hi, if your phone is not asking for an unlock code, then it's not network locked, sorry. If it doesn't work, there's some other kind of problem.
- Abraham - 2013-08-24T19:45:55
Hi how are you doing.. 1 Verizon yes you can used on gsm networks I have one and still working you just need to change the network...
- Abraham - 2013-08-27T00:51:47
Yes I can. . Dont tell me no cause like I say I have 1 s3 connected to t mobile, this is not my first Verizon phone unlock. . I can show you. If you say no ok... then but I have my s3 whit t mmobile
- FastGSM - 2013-08-27T14:37:21
Hi, as you can read on this page, this service removes "SIM Network Unlock PIN" or "Enter Network Lock Control Key" message. If you see such message in your phone, then it can be unlocked. But I'm quite sure you don't get this message on Verizon model.
- Eli - 2013-08-27T02:46:47
I wouldn't trust this site. Apparently they don't understand that the Sprint (USA version at least) does in fact have a SIM card slot.
- FastGSM - 2013-08-27T14:33:04
Yes, even CDMA phones can have a SIM card slot but only for roaming purposes (if it's not a dual mode phone). Anyway, the description of our service says clearly that this service removes "SIM Network Unlock PIN" or "Enter Network Lock Control Key" message and you won't get the if you use a different network SIM card in Sprint phone. If you would, such phone would be possible to unlock.
- Elizabeth De Guerrero - 2013-08-27T20:06:37
I have the SPH-L720 (Sprint) and im using it CDMA, the thing is i just want to know if can i unlock to use it with SIM CARD for another company (Claro) In Dominican Republic. Can i???
- omer - 2013-09-01T03:23:55
Hi I have Samsung Galaxy S4 SGH-M919. I made this steps but I forgot my SIM card on the phone. Now I cannot find any signal of my carrier.
- oscar - 2013-09-05T02:33:14
Hi I have a galaxy s4 m919 from tmobile I unlocked it with a code but I put a telcel sim in from mexico and when I try to dial it says network not registered
- FastGSM - 2013-09-05T07:06:17
Hello, if the phone is unlocked, then your problem is no longer related to unlocking. Maybe you just need to change the network settings in your phone to automatic. Your phone’s hardware may also not be compatible with the network type of your new provider, or your phone may be blacklisted, or there may be a problem with the SIM card or the network coverage in your area.
- ansaarelectronic - 2013-09-11T16:26:05
- FastGSM - 2013-09-11T18:36:39
Hi, how can we help you?
- julian - 2013-09-14T03:18:31
I have a galaxy s4 from Three UK. Can it be unlock via imei?
- Suresh Kumar - 2013-09-14T04:01:26
hi this s4 model number -SPH-L720 SPIRINT is that pasiable
- Harry - 2013-09-17T05:16:47
What is the difference between "Samsung Galaxy S4 Unlock Code" and the "Unlock S4 via Network Code"? I have an S4 on USA At&t, and still on contract with it. Also, what is an Unfreeze code?
- FastGSM - 2013-09-17T06:42:47
Hi, please read carefully description of our services on this page. With the "Network code" service, you will receive just the AT&T network code, with the "Unlock Code" service, you will receive all available codes for your phone from the Samsung factory database.
- Miguel - 2013-09-19T22:00:57
I.have a question I bought a galaxy s4 come to find out the phone is reported lost. And I can't connect it using sprint can I unlock it and use it on a different carriers. Reyesmiguel74@gmail.com
- Rajesh - 2013-09-20T05:44:30
Hi.. my samsung galaxy s4 baseband version is ending with MF3.. can i unlcok it using USB cable ? if not what is the best option to unlock it
- FastGSM - 2013-09-21T08:36:14
Hi, unfortunately MF3 baseband is not currently supported. It would be possible to unlock the phone via unlocking codes, but it depends on what country it's locked to. Please read details about the IMEI service on this page.
- van - 2013-09-22T16:58:39
About " this service can only be used if you
have never entered an incorrect unlock code". I aldready try some code with the unsuccessful message so that mean i can't use thic service any more? Are there any other way to use it?
- Michael macahilo - 2013-09-23T09:18:38
Hi! I bougth a samsung galaxy s4 which is labelled as european sim model and i cant use my philippines sim card..it is possible to unlock the phone to use my sim card?
- jacob - 2013-09-24T16:59:28
hi guys.. i bought galaxy s4 gt i9505 from US and it european version but it works with american sim but in with Israeli sim it doesnt work. what i need to do??
- FastGSM - 2013-09-25T06:30:57
Hi, this service just removes "SIM Network Unlock PIN" or "Enter Network Lock Control Key" message. If there's another problem, it's not related to unlocking and we cannot help with it, sorry.
- mosi - 2013-09-27T08:46:21
I bought a Samsumg galaxy s4 SC 04E docomo from JAPAN. I would like to use in Turkey. I can use my sim but I can not use Turkish.
How can I edit more language?
- FastGSM - 2013-09-28T07:08:18
Hello, this service removes SIM Network Unlock PIN or Enter Network Lock Control Key message. If this is your case, you can use the unlocking software to unlock it. No other method or problem is supported in your case.
- Munna - 2013-09-30T06:10:32
How to reset/rewrite the IMEI number and baseband version no. for SAMSUNG GALAXY S GT9003 model, as it got corrupted in 12th month. please help me in this.
- Nermin - 2013-09-30T11:22:48
I have a samsung SPH-L720 ( usa sprint ) will this unlock work for me if I'm using phone internationally , can Sprint unlock this phone?
- thai - 2013-09-30T19:42:53
hi i have t mobile from usa which package should i buy can i buy the att ones ??
- Ahmed Almowald - 2013-10-02T17:01:51
who to do unlocked galaxy s4 sprint to cdma free please
- Edu - 2013-10-02T18:51:13
My phone is the Samsung Galaxy S4 Sprint SPH-L720 16GB, I'd like you confirm that you can unlock by imei before buying the service.
I await your response. Thanks for everything. A greeting
- omaan - 2013-10-06T18:49:53
Hey , can anyone help me out ? I have a s4 of t-mobile I want to switch the network but mistakenly I have done somethng wrong and now the phone isn't showing its imei number and still they ask for that code to unlock :(
- Esse - 2013-10-10T03:18:54
Can I unlock my sim card slot on a USA Verizon Samsung Galaxy S4?
- jesus - 2013-10-10T19:20:16
What happened to att unlocked is temporary unavailable
- luiz - 2013-10-11T22:00:53
I bought a S4 from At&T in USA and now i want to use in Brasil. How should i procedure?
- FastGSM - 2013-10-12T07:44:05
Hello, please read carefully description of our service on this page. It's possible to unlock this phone by USB (cheapest option), or with "Samsung Unlock Codes - USA Carriers" service (more expensive but more easier to do).
- art - 2013-10-14T23:45:36
how about metro pcs galaxy s4 will it work on it
- Ryan - 2013-10-16T03:12:10
So i purchased the unlocked code, put my Sim in and booted the phone...
the nework ulock prompt appeared, entered my code that was given and it
said "Network Unlock Request Unsuccessful" (this is the first time I have
entered one). Now the prompt wont show up anymore... According to the tutorial you enter *2767*3855# to full reset but when i do nothing happens..... please help!? I spoke to Fabian before the purchase to verify it would work...
- FastGSM - 2013-10-16T07:04:20
Hello, if the phone is not asking to enter the unlocking code anymore, then it must be unlocked. Please contact our email support at email@example.com if there are any more problems, thank you.
- Tului - 2013-10-16T04:57:00
Unlocked my T-Mobile S4 with no issues via the USB method. This was because it was an insurance replacement and I couldn't use the diagnostic menu free unlock on it.
- manu92882 - 2013-10-19T13:22:42
Hi is it possible to change the imdi of a phone?
- androids6 - 2013-10-22T09:55:56
does this method unlock newly introduced region lock by samsung
- Eric - 2013-10-31T05:55:22
hi i have a question i have a sprint galaxy s4 it has a bad imei i want to unlock it and use it in Bolivia is it possible?
- Cheng - 2013-11-06T04:34:52
hi, i have a gt i 9500 from tigo guatemala, which method will work best to unlock the "enter network unlock code" and if its 100% guarantee to work or whats your refund policy. thx
Hey I recently bought a GS4 and it worked great but now it won't read my sim or any other sim .Any idea's why?
- Luis Guilherme - 2013-11-13T23:44:49
recently bought a unlocked i9505 galaxy s4 at media market in eindhoven, but here in Brazil when I use a chip asks to insert pin network unlock sim. can you help me?
- FastGSM - 2013-11-14T09:00:56
Hi, if it's network locked, then it would be possible to use unlocking by USB or by unlock codes for European networks, please see details on our page for i9505 model here: http://www.fastgsm.com/en/sams...
- MANS - 2013-11-14T17:32:42
i have a samsung s4 designed for use in Bahrain, made in vietnam . hOW CAN I GET THE SIM NETWORK UNLOCK CODE FOR USE IN iNDIA?
- Luis - 2013-11-15T23:14:08
My Baseband version ends with mj7. What can i do? I saw that unlocking by usb doesnt work. How method ill have to use?
- Ricky :) - 2013-11-17T15:17:53
Hello I bought a us cellular galaxy s4 recently I was wondering if I could unlock it to be use with cricket or boost mobiles network.. Or can it be flash to any of this two providers?!
- Hossam - 2013-11-18T22:16:45
Hi , I am deeply confused with my Samsung S4 as I have 3 different IMEI. I have one at the back of the phone which is different than the one who is under status and both of them are different than the one I receive by clicking *#06#. I even not sure if my phone is real or fake specially I bought it online and two of the IMEI numbers I found are not supported by Samsung Canada where I live.
I appreciate to tell me which IMEI number is the correct one and how can I tell if my phone is real or fake if possible .
- FastGSM - 2013-11-19T08:30:45
Hi, that's really weird, it may be a replacement unit. Anyway, such phone cannot be unlocked with our service, sorry.
- Nicole Myers - 2013-11-22T00:22:44
I have a Galaxy S4 from Japan on the Docomo network. If I unlock this phone will I be able to use this phone in other countries? I know the Japanese iphones do not work in other countries but wanted to check on my galaxy.
- Steve - 2013-11-24T02:46:03
hi will the software abobe (samsung galaxy s4 unlocking software: $14.99) is able to unlock my S4 SPH-L720 Sprint from the USA??
Samsung Galaxy S4 Unlocking Softwar
- Mohammed Edrees - 2013-11-28T09:23:58
in my galaxy s4 i have 17 digits of imei number wat to do?
- Sofie - 2013-11-30T07:42:04
Hello, I have a tmobile galaxy s4 and I would like to unlock it for metro pcs. I took my phone into the store and they put in their sim card and I got a message saying "SIM network unlock PIN". What is the difference between unlocking with a USB and unlock codes by IMEI and which method would be best to use??
- Jimmy Hong - 2013-12-02T05:54:54
I have a i337m running Android 4.3 (baseband reads I337MVLUEMK6). Do I have a choice of USB unlock or code unlock? Is both options considered factory unlocks and can I use international sims in international countries?
- FastGSM - 2013-12-02T15:54:05
Hi, it's not possible to unlock this baseband by USB, sorry. Just the unlocking by IMEI is possible. It's a permanent factory unlock, after unlocking it's possible to use the phone on any compatible GSM network worldwide.
- Aline Mee - 2013-12-07T12:29:49
i have S4 from saudi arabia its GT-I9500, can i unlock it?
- Aline Mee - 2013-12-07T17:00:54
Hello, i want to place an order but the price is still 19.99 for samsung galaxy S4 not 14.99, is something wrong?
- FastGSM - 2013-12-08T09:55:38
Hi, you probably purchased service by USB and you are trying to submit your IMEI in My Account, which is a different service. To use the USB service, you have to use our software. If there's a problem, it's best to send an email to firstname.lastname@example.org
- Rafa Couto - 2013-12-10T16:10:02
Hi I Have a Vodafone Galaxy S4 that was bought in Ireland, now I've moved to Brazil and I need unlock it.
The baseband ends MJ7. Is this able to unlock?
- Weinz - 2013-12-11T08:32:51
I have the galaxy s4mini from sprint. Can it be unlocked?
- Osvaldo.36 - 2013-12-14T16:46:10
What does it mean if the phones "blacklisted" ?
- Gill - 2013-12-14T23:40:22
Hi, Is USB unlock method for Samsung S4 will be permanent like the IMEI method?
- Blaze - 2013-12-15T05:15:47
Hi, I have a bad IMEI on a t-mobile phone, t-mobile currently has it network locked, can i use your unlock code and use it with AT-T carrier. USA
- FastGSM - 2013-12-15T08:36:37
Hi, if the phone is blacklisted, you won't be able to use it in the same country, even if you unlock it.
- michu messi - 2013-12-15T08:00:46
I bought a Samsumg galaxy s4 from uae. I would like to use in india.
Is it possible unlock it?
If possible, which is the procedure to buy the code?
- noelc - 2013-12-16T17:48:33
hi I have a us cellular phone and need to use it in Europe it is possible and what can you do to make these convert happens?
- nana - 2013-12-16T22:18:20
Hi. i bought a samsumg galazy S4 from sprint and i would like to use it in venezuela can i unlock it?
- FastGSM - 2013-12-17T08:10:10
Hello, it's possible to unlock this phone model only if it's showing SIM Network Unlock PIN
or Enter Network Lock Control Key screen and cannot get that with Sprint models, so it's not possible to use the service. But we are currently testing a new service for Sprint models, please contact email@example.com about this possibility, thank you.
- punetori - 2013-12-17T01:44:03
Can I unlock my galaxy s4 from us cellular,model sch-r970
- kingsley amoasie - 2013-12-18T03:04:08
hi I have a sprint galaxy s4 that uses sim card however when I dial *#06# it doesn't give me IMEI instead it show MEID and 14 numbers can it be unlocked?
I have a S4 that is on Sprint in U.S. (SPH-L720) I want to unlock it to use with an AT&T sim. Is this possible?
- Mohaman - 2013-12-21T19:27:12
i have a Samsung Galaxy S4 Erupa only phone
how can i Unlock it?
- Ayman - 2013-12-22T05:40:12
I have Galaxy s4 from t-Mobile can I use it in Egypt
- Chris - 2013-12-23T19:02:46
Does unlock by cable also work with S4 mini?
- corine - 2013-12-23T22:21:45
how do I add credit? Can I pay other than paypal?
- fidal - 2013-12-24T21:23:08
Can you tell me why my account was immediately suspended when i made the account. I did not make any payment nor did any transaction or made any funny business.
- FastGSM - 2013-12-25T08:16:09
Hello, sorry for the problem, please send an email to firstname.lastname@example.org, so that we can look at your account and activate it again.
- triton kahakai - 2013-12-25T23:29:25
hi I was told from a few different sources that a Verizon galaxy s4 is all ready unlocked due to 4g LTE. is that true?
- keisha - 2013-12-26T22:09:33
Hello, I have a Samsung Galaxy S4 SHP-L720 from Sprint (USA). Is it possible to be unlock to use with another prepaid carrier?
- FastGSM - 2013-12-27T06:55:20
Hello, it's not currently possible to unlock Sprint models with a regular service, please send an email to email@example.com about the unlocking possibility, thank you.
- Yasser - 2013-12-27T01:25:22
Hi my cell phone is the Metro PCS Galaxy S4, the model is SGH M919 N. It is possible to unlock and I use in Brazil? Thank U
- Ken - 2013-12-28T16:50:57
I had brought a samsung galaxy s4 NTT DOCOMO telco from japan couple months ago, now I tried to use this phone in Malaysia but failed. Can use this software to unlock the NTT DOCOMO Samsung s4 easily?
- Rui Rodrigues - 2013-12-28T16:58:24
i have a galaxy s4 unlock from Portugal, but in brazil ask for a unlock key. It´s possible to work in brazil?
- Pepe Beto - 2013-12-30T15:01:46
Hello Staff, you can unlock Galaxy S4 M919V via IMEI or some other method from Nextel Mexico ??? this have this data:
Model:SGH-M919 Build:JDQ39 4.2.2 Firmware:M919VWXUAMJ1 Carrier:MNX MCC/MNC:334020 Product code:SGH-M919ZWLMNX
- Josr - 2013-12-31T07:50:44
Hello. I got you a code to unblock a tmobile 3 but they still have not sent it. The 28 of December buy it. I expect your help pay
- FastGSM - 2013-12-31T10:43:12
Hello, we don't know what service you used exactly, please send an email to firstname.lastname@example.org, thank you.
- Sam - 2014-01-01T19:41:37
I have Samsung CDMA galaxy s4 with us cellular , can I unlock that phone?
- Sc-04e docomo - 2014-01-04T10:24:10
Hello id like proceed in your unlock solution but first do you unlock s4 ntt docomo sc-04e if yes pls tell me so i can proceed your service
- Key - 2014-01-06T10:08:08
Hello I have a samsung S4 verizon model # SCHI545zkv. Can I unlock it and use it abroad outside U.S ?
- Anubroti Dasgupta - 2014-01-11T14:55:26
I bought a samsung galaxy S4 i9500 from USA. How can I use it in India as it is not recognizing any sim from India? Pls help
- FastGSM - 2014-01-12T08:52:47
Hello, when the phone is locked, it shows "SIM Network Unlock PIN" or "Enter Network Lock Control Key" message. This service cannot help in case of any other problem, sorry.
- Anubroti Dasgupta - 2014-01-11T14:57:42
After entering an Indian sim, it is showing ' Phone not allowed MM#6'
- Andy - 2014-01-13T00:16:55
Hey i found this Galaxy S4 SGH-1337 and its says limited service in the hidden menu and i know it was reported lost/stolen. Can I unlock it at all?
I have a Samsung Galaxy S4. I wanted to put a password lock on this phone like I have had on all my previous phones. I put in the pass codes and when I was asked to verify the codes, something went wrong and now I cant get into my phone. I took it to the ATT store where I bought it and they contacted Samsung and they all said they cant do anything without a hard reset. I took it to Best Buy and they said the same thing. I have hundreds of pictures of my baby girl in the phone. Hard Reset is NOT an option. Can your team help me??
- mvreal - 2014-01-17T01:27:34
Would I be able to use a T-Mobile sim card in my sprint l720 galaxy s4
- Phil - 2014-01-17T20:39:24
Can baseband version "I337UCUEMK2" be unlocked? I was confused about the baseband versions. Thanks
- carlos - 2014-01-19T05:45:41
Hello I have a samsung S4 sprint model # SPh-L720. Can I unlock it and use it for T-Mobile
- muhammed shafi E - 2014-01-22T20:06:01
My galaxy s4 i9500 is asking for SIM network unlock pin when I try to use in india, I purchase this from saudi arabia if there is any solution for the said pls help me
- Vraj - 2014-01-23T22:16:46
My baseband version id M919UVUAMDL can i unlock my tmobil S4 by usb unlock?
- ravi - 2014-01-24T19:50:54
I have a Sprint Galaxy S4 that I got unlocked by Sprint. Which US carriers can I use this phone with for no contract plans ?
- jacki - 2014-02-03T04:05:22
I have a samsung galaxy s4 with 4.3 android, can it still be unlocked
- Filipi - 2014-02-08T19:38:02
I have a t-mobile galaxy s4. It is in mk2 baseband and the android version is 4.3, unlock by usb will work?
- Filipi - 2014-02-11T01:48:10
So, i installed android 4.2.2, baseband is MDL, now unlock by usb will work?
- FastGSM - 2014-02-11T08:01:36
Hi, well you can see details in the description of the USB service, it should work. If there's any problem, please send an email with details to email@example.com. Thank you.
- Madisen - 2014-02-16T06:30:49
I have a galaxy s4 from us. Cellular. Can you unlock it?
- Judy Gonzalez - 2014-02-17T16:20:38
i have a question if i have a s4 and I want to unlock it for boost mobile, is that possible? i heard no because I will need a chip and boost don't use chips.
- FastGSM - 2014-02-18T08:13:45
Hi, when you unlock the phone, you don't unlock it for specific provider but when the phone is unlocked, you can then use it with any compatible provider worldwide. So if you are not sure if your phone model is compatible with your new provider, you should ask the provider.
- toy - 2014-02-18T02:53:50
Hi possible to unlock SGH-i337 from AT&T. Thank you.
- toy - 2014-02-18T12:13:01
How about Galaxy Note 2 from US Cellular SCH-R950?
- toy - 2014-02-19T19:32:50
How long does it take for unlock code to arrive been waiting for 2 days.. thanks
- FastGSM - 2014-02-20T08:37:09
Hi, it depends on the service that you used, every service has different delivery estimate. It's written on the page where you submit your IMEI. If it's taking too long, please send an email to firstname.lastname@example.org with an email address of your account, so that we can check if anything's wrong. Thank you.
- Amie Hankins - 2014-02-27T01:09:33
If the sw version ends in mk2 is it unlockable? no matter what?
- Delhi174 - 2014-02-28T03:49:07
I have the galaxy s4 by tmobile and I bought the unlock code by USB but it won't work because of the firmware I have so I put 15 dollars on my card to add to the 14.99 I use to purchase the unlock by USB, I wanted to know can I add the 15 dollars on because I didn't use the USB unlock
- kittu - 2014-03-01T18:29:38
hi I have a samsung s4(ATT usa) which is not registered with network. sent the phone to brother in New Zealand, he said he can unlock it.. but now he called back and asking me he cant unlock it since its not registered with ATT USA. Is there any chance of making the phone work.
- Gerald Koeff - 2014-03-05T02:31:33
Is it possible to unlock a MetroPCS Galaxy S4?
- smack - 2014-03-11T01:06:28
I have AT&T Samsung S4 with this baseband i337UCUAMDL Kernel 3.4.0-453947. Is it unlockable by USB or IMEI?
- Mikel - 2014-03-13T21:27:10
hey there, so i have a Samsung Galaxy S4 i9500 that i want to unlock... its locked by Digitel (venezuelan carrier) and im living in argentina now. If i use the latin america unlock code could i use it with any carrier around the world ? (i travel a lot for work)
- Rafael Lucena - 2014-03-15T11:46:35
I bought the S4 GT-I9505 in Germany. I'm in Brazil and asks for the PIN Code Unlock Network. Which of your services should I buy?.
- katie - 2014-03-15T20:20:42
Can you unlock a Sprint Galaxy s4 ? ive been trying to unlock it & i cant find anywhere to unlock it will this help ?
- RàîHáñ AhMëd - 2014-03-15T20:35:37
Hi I have bought a Samsung Galaxy S4 I9505 in Saudi Arabia and it has Mobile Country Code lock on it. Means that i can use it only in some specified countries Is it possible to unlock
- Chanu - 2014-03-18T07:00:24
I bought a Samsumg galaxy s4 from US Cellular. I would like to use in Sri Lanka
Is it possible unlock it?
If possible, which is the procedure to buy the code?
- FastGSM - 2014-03-18T08:05:46
Hi, it's possible to unlock the phone with the service for USA Carriers, if it asks to enter "SIM Network Unlock
PIN" or "Enter Network Lock Control Key". Please read all instructions on this page carefully, thank you.
- smack - 2014-03-20T02:04:34
How long does it take to receive unlock code for Samsung S4 on AT&T carrier?
- Nelson Mirabal - 2014-03-20T08:20:13
my phone is a tmobile s4 from ny im in the army would the unlock work for use in korea ?
- FastGSM - 2014-03-24T16:08:55
Hi, it's possible, please read details on this page carefully, thank you. After unlocking, it's possible to use the phone with any compatible provider worldwide.
- Sean - 2014-03-23T20:36:14
I have a i545, I don't see it in the list?
- Alex - 2014-03-31T22:53:12
Hi I have an Samsung Galaxy S4 Black edition, europe blocked and want to unblock it for Republic of Moldova. I havent seen in options black edition, does it matter if i choose just galaxy S4 ?
- FastGSM - 2014-04-01T13:39:55
Hi, it doesn't matter, you can use the service for Galaxy S4. Please read all instructions carefully, thank you.
- toy - 2014-04-01T15:54:56
Hi how about S4 SGH i337 on 4.4.2 KIT KAT. Is it possible?
- Anusha - 2014-04-09T14:20:51
Hi I bought Samsung galaxy S4 from UK and can I able to use this phone in India..if so..can I know how to know the sim network unlock pin?
- FastGSM - 2014-04-10T07:44:27
Hi, it's possible to unlock the phone by USB, or by IMEI. please read carefully details on this page, thank you.
- John_silva - 2014-04-12T12:54:56
Is it possible to unlock a galaxy s4 sph-l720 for sprint? and if so how do I do it "legally"? or where do I go to have it done?
- ali - 2014-04-14T15:59:03
hi my galaxy s4 is from saudi arabia it is netwrk locked and i dnt knw the carrier. i wnt to use it in nigeria. pls can u help
- FastGSM - 2014-04-15T07:19:58
Hi, it would be possible to unlock the phone by USB, please read carefully instructions on this page, thank you.
- Alex - 2014-04-15T00:36:14
my phone ends with GM1, so if I understand well the USB option would not work for me right?
- Alex - 2014-04-15T01:36:59
- fayis - 2014-04-15T12:14:00
iam using s4 19505 ...I TRIED THIS THE CODE 0011 ..BUT ITS NOT WORKING...I BROUGT FROM SAUDI ARABIA..HW CAN I REMOVE THAT..CAN U PLS HELP ME...
- FastGSM - 2014-04-16T14:26:40
Hi, I'm not sure what you mean by that code, please send an email to email@example.com with more details about your poblem, thank you.
- greg - 2014-04-24T01:23:40
I have a galaxy s4 SPH-L720. when I turn on the phone with the new sim card, the unlock screen does not pop up. It only says invalid sim card and does not let me enter the unlock code? Any suggestions?
- nazrul - 2014-04-26T18:03:48
hi i have some problem. i unlock my samsung s4 by network code but now not register on network now what can i do pelase help me thank u
- FastGSM - 2014-04-28T07:26:35
If the phone is no longer asking to enter the unlocking code, then it's unlocked and the problem is no longer related to unlocking. Maybe you just need to change the network settings in your phone to automatic.
Your phone’s hardware may also not be compatible with the network type of your new provider, or your phone may be blacklisted, or there may be a problem with the SIM card or the network coverage in your area.
- dennis - 2014-05-15T15:38:21
I have 1 s4 from sprint can unlock?
- Åñdrew Lim - 2014-05-18T00:25:10
hello i have bought a galaxy s4 thats sprint verion and want to use it in guyana and im wondering if it can be unlocked becasue it has a 4.4.2 software
- Brittany - 2014-06-04T00:52:35
I have a T-Mobile Galaxy S4 4.22 (I think maybe only one 2). Am I able to unlock with your program?
- Colby - 2014-06-08T00:45:46
I have a Galaxy S4 Active from AT&T that I think is GSM locked this will work to unlock it?
- josh - 2014-06-08T19:14:09
HI if i pick the usb option how much time will i receive the program
- Sam - 2014-06-13T22:09:04
Hi, I bought unlocked Samsung Galaxy S4 GT-I9500 GSM in ebay (USA). I can able to call from US (T-Mobile) carrier but
It is not working in India. I am not sure about the carrier which is locked to? Is it possible to unlock the device if you don't know the service which is locked to?
Also, is it possible to unlock the regional locked device?
- FastGSM - 2014-06-14T14:47:20
Hello, unlocking is possible only if the phone asks to enter “SIM Network Unlock PIN” or “Enter Network Lock Control Key”. You can unlocking by USB (in this case it doesn't matter to what network the phone is locked to), or by IMEI. Most probably the correct service to use in this case would be the "Samsung Unlock Codes - Option 1: USA" service.
- Darwin - 2014-06-18T10:06:28
I have Galaxy S4 from US Cellular...bought it in the US and I want to use it in Bolivia (South America) with this method Am I going to be able to unlocked? plz let me know i need help with this :$
- Maria - 2014-06-28T04:21:17
Can you guys Unlock Samsung Galaxy s4 from Cricket?
- joejoe - 2014-06-30T19:35:50
my base band is i9505xxxUFNB8 can this be unlocked, i've tried entering the code and that doesnt work
- Fatos Nishori - 2014-07-02T17:10:08
i want to unlock samsung galaxy s4 spint usa, can be unlocked ?
- Ahsan Khan - 2014-07-09T09:56:16
hi,i have samsung galaxy s4 mini made in korea it have a major problem of imei when i dial *#06# it shows (invalid imei) plz will someone help me find the solution
i cannot text and dial
sim is inserted and it show invalid imei
in notification bar it shows invalid imei at the bottom
I WILL BE VERY THANKFUL IF YOU HELP ME!
- Eliran Sasi - 2014-07-20T17:37:26
Hi , Can i unlock a Samsung Galaxy S4 model R970 \ L720T with your software?
- Sharon - 2014-07-22T15:16:56
can you unlock Samsung Galaxy S4 SCH-R970C ,Cricket, cdma
- Fabio Pereira - 2014-07-25T15:06:35
Hi i bought a samsung galaxy s4 but i made a huge mistake and the phone is fake my question is can i stil unlock the simlock ? pls answer somebody ? or is the phone now just trash ?
- milon - 2014-07-27T16:56:04
My mobile sprint Sph-L702T 4.4.2 version and I am from Bangladesh can I unlock my phone
- carl - 2014-07-29T07:13:08
you have code for galacy s4 i9505?
- Carz - 2014-08-02T08:30:28
Hey so when i buy the unlock codes do i get them as an email or do they have to be shipped to my front door?
- FastGSM - 2014-08-02T15:19:58
Hi, after purchasing the service, please submit your IMEI in your account (after selecting a correct service). When the codes are available, you will get them by email.
- bumboc - 2014-08-08T19:27:11
Can a Sprint Galaxy S4 or HTC Evo Design be unlocked to work with T-Mobile in USA
- kofi - 2014-08-10T06:44:50
i use sprint s4 can i unlock it to any carrier
- Luis Cuellar - 2014-08-11T14:06:38
Hi, I want to unlock a S4 via Network Code, the phone was buyed in Colombia and is planned to be used in Oi Brazil, it's possible to do so by this way?
- Gdog - 2014-08-16T00:33:02
I am currently on a bell (canada) network. I unlocked my phone a few months ago. Eventually after a couple of weeks, my phone started not recognizing the sim card and rebooting, up to a point were it would not recognize it at all. I changed the sim card twice to see if this resolved the problem, but the same effects would happen. eventually i took it to the samsung service centre, and they replaced the motherboard, however, once we started the phone back again, the phone asked for a "SIM network unlock PIN". I wonder if I can use the same unlock PIN as I previously used?
- jammin john - 2014-08-18T23:25:02
- FastGSM - 2014-08-20T06:38:25
Hi, can we help you? :)
- Dwan McDowell - 2014-08-26T21:20:42
Hi, I have a Samsung Galaxy S4 from Sprint it says that the code will work on all networks, but then i seen someone ask would it work on sprint but it has been a couple of months since that question has been asked . Yes the phone is blacklisted by sprint so will the unlock code work??? and if not what can I do about it
- ANDRES CACERES - 2014-08-30T04:26:23
I HAVE A SPRINT S4 WITH SIM SLOT.
I CAN BE UNLOCKED FOR GSM NETWORK OF COLOMBIA?
- abuterrica - 2014-09-04T23:26:11
hi, i have this brand new samsung s4. i didnt put a sim inside as i want to use in africa. how can i unlock this?
- paul - 2014-09-13T14:21:24
i m living in france and want to know if you can unlocked a sprint galaxy s4
tx for answer
- sam - 2014-09-25T19:00:41
Hi Can I unlock SAMSUNG S4 which is locked by T mobile currently ? and then use this phone in a different country ?
- Tasha - 2014-09-30T07:01:48
Hello, I Have A Galaxy s4 From Sprint. I Would like to unlock it because I cancelled my plan. Is that possible?
hi im going to use the samsung s4 with provider dialog srilanka purchased the phone from uk, will this help
- galaxy 4 - 2014-10-08T18:36:58
hello do you guys have a code to unlock a galaxy4 from sprint?
- kalani - 2014-10-08T23:30:50
if my software version ends with NH7 will usb unlocking work
- Kev - 2014-10-12T11:57:07
Hi. I have an s4 from AT&T they unlocked it and was able to use it for a different carrier on Guam. But when it was factory reset it is now saying emergency calls only. How can I fix this?
- patience - 2014-10-13T00:18:22
hello. is it possible to unlock a vodafone portugal galaxy s4 I9505?
- abhay kanada - 2014-10-14T13:58:21
i have T-mobile Samasung Galaxy 4 Blacklist.. USA,. I would like to get unlocked and wants to use oversea,, Possible to unlocked by fastGsm??
- Daws - 2014-10-17T00:23:02
Hey I have a samsung s4 active on at&t and I want to unlock it to cricket is it possible
- Sterlin - 2014-10-20T04:31:34
Hi I bought a us cellular galaxy s4, is it possible to unlock it?
- RPM - 2014-10-23T18:34:53
Hi, I have a Samsung Galaxy S4 with AT&T contract. Want to unlock the phone. Possible ?
- Question - 2014-10-24T23:28:42
wondering is this a scam or not i already got ripped off by another online site
- FastGSM - 2014-10-25T07:41:21
Hi, it's not. :)
- Glen Ricky Himawan - 2014-10-30T02:35:41
Hello, I want to ask can you unlock a regionally locked phone? I have a sim unlocked S4 but didnt know that it was regionally locked. Thank you so much for your help
- Augie - 2014-11-01T06:03:01
high i have a tmobile m919 reported stolen
baseband ends in mk2
and says not registered on network when dialing im trying to use a t-mobile sim
will usb unlock work?
Can you unlock a Samsung Galaxy S4 mini (CDMA) in USA to use on Tmobile (GSM) in USA
- Ari - 2014-11-11T23:54:22
I live in Europe and i received an S4 sent to me from Canada, but its locked to a network, when i tried to get an unlocking code i received an email to say it was not possible to get an unlocking code as the phone has been reported lost or stolen. can i still get an unlocking code from and will it work in Europe, Thanks
- madan magar - 2014-11-13T10:04:14
hi I've drawn too much pattern and now my phone is asking Google account but i don't have for that what should i do
- John Yamama - 2014-11-15T11:52:11
I have a S4 mini GT19192 Duos dual sim but one sim is working the next one says not registered on network
- FastGSM - 2014-11-17T07:47:47
Hello, sorry but the phone is not network locked if it's not asking to insert a network code. Our site shows what unlocking is for. Limited service usually means a problem with the SIM card, no network coverage, hardware issue of the phone or the phone could be blacklisted.
- Jose Manuel - 2014-11-16T17:24:32
I have a sprint galaxy s4 and I want to unlock it for telcel Mexico , Could you help me with that please?
also I have a metro pc lumina nokia 520 and I want to unlock it for a telcel Mexico, please help me thanks.
- FastGSM - 2014-11-17T07:57:03
Hi, Sprint models cannot be unlocked, sorry. I'm afraid we cannot help in case of Nokia 520 that is locked to metro pc, either.
- peterha - 2014-11-17T03:12:23
I have a sprint galaxy S4, can you unlock it so it can work with T-Mobile?
Thank you so much.
- rafi - 2014-11-27T17:44:54
Hi I have Samsung galaxy s4 let purchased in Saudi Arabia. I want to use it in India, how could I unlock network.
- Laverne Anthony - 2014-11-27T21:26:27
I have a sprint samsung galaxy s4 L720t is it possible to get it unlock to use on metropcs
- leah - 2014-11-30T16:39:08
my phone is Samsung galaxy s4 SGH-I545 for Verizon...could it to be unlocked using your unlock code...
- L720 - 2014-12-07T02:37:09
i have a Samsung galaxy s4 sprint. can I unlock to use on Verizon?
- Joey - 2014-12-07T05:04:34
hey i tried unlocking the phone today, Samsung Galaxy S4 M919 today and i tried the USB mode and it said Strong security detected or something like that. Please Help
- abdu - 2014-12-08T03:05:53
hi sir I have I phone 4s Verizon CDMA United state. it can be unlock? please let me know and how much is cost.
- Hisham Malik - 2014-12-10T04:10:50
I have a galaxy s4 running 4.4.2 can it be unlocked? Does the android version have anything to do with it?
- amanda.darling - 2014-12-10T22:24:00
Hi I have a Verizon galaxy s4 can I bring it to us cellular
- Hisham Malik - 2014-12-16T02:43:19
Does your software root the device to unlock it? If I unroot my rooted phone will I lose the sim unlock as well?
- Anna - 2014-12-18T04:55:06
Hello I have a samsung Galaxy s4 from metropcs can I unlock it and activate with T-Mobile. As sons that I turned on the phone the first thing that ask me is pin# so I'm confused. Can you help me thanks.
- vinu - 2014-12-24T08:21:17
hi i brought samsung s4 mobile from saudi arabia. i cant use it in india it ask sim network unlock pin . please help me
- Beth Jones - 2014-12-31T01:54:43
Sprint Galaxy S4 can you unlock?
- nate - 2015-01-06T03:17:41
hey it said $14.99 to Unlock Samsung Galaxy S4 but the when i paid for it. it said i have 10 credit and i have to pay $10 more for it to be $24 for me to get the unlock code for at&t which is gonna be in 1-5 day but the unlock by usb + code provided said Instant. whats going on
- FastGSM - 2015-01-06T15:30:07
Sorry for the misunderstanding, please read again carefully instructions on this page
You purchased service by USB and then you tried to submit your IMEI for a more expensive direct unlock via IMEI.
Please note that to use the purchased service (Samsung Unlock by USB), you have to use our software. Please see our detailed guide for your phone model: http://www.fastgsm.com/en/page...
- Logan - 2015-01-07T22:07:12
Hello i have a Samsung Galaxy s4 from sprint. Most of the websites ive looked at dont offer sprint codes and i cant find one with sprint here. Help?
- Pucho - 2015-01-09T11:37:52
Do you unlock Galaxy s4 I9500 from Argentina, Claro?
- Tony - 2015-01-10T22:06:04
I have a US Cellular Samsung Galaxy S4 that I need unlocked. It doesn't give an option to put in a code. It just says Invalid Sim when I put a different SIM card in. Any suggestions?
- zinoo - 2015-01-13T17:36:49
does this software support kenyan networks to unlock?
- Ahmed Abushanab - 2015-01-14T08:40:41
Hi, I Have galaxy s4 t-mobile and i wanna unlock it for att service .. so I bought Unlock - Unlock by USB + Codes Provided And tried it $14.99 one .. but it doesn't work And there is a message said on the Unlocker Client Program "NEW SECURITY DETECTED - PLEASE VISIT FASTGSM.COM/50"
Please Help !!
- Richi Mistry - 2015-01-17T14:32:12
Hi, my baseband version ends with NJ4, can I unlock it with USB and codes provided
- george - 2015-01-23T06:25:04
I have a galaxy s4 sprint when I put in the code *#0011# it says noservice imei certi: na
Hi, I have a C Spire locked galaxy S4. I checked and the Baseband number ends in NK1, so it can't be unlocked by USB, but I'd like to make sure it could be done with the manufacturer unlock code. Thanks.
- Antne Davis - 2015-02-18T22:53:52
hello can i use this software to unlock a sprint s4 and note 3 and would it work on a gsm ?
- Roshan Paudel - 2015-02-24T15:23:23
Sir / madam
I have purchased s4 mini (GT-I9190)
from UAE. Right now i am in Nepal. This phone works 1 year only after
one year one message come "Insert Valid Sim Card" than i press ok. only
ok button is there. Now, it does not show any sim card. I tried many sim
but it does not work but That sim card works in other device. Sir /
madam any idea to solve the problem? No Sim Insert Sim Card message is