How-To Guide: Unlock Samsung INFINEON inc. C3530, S3350 and S3550

Is my phone supported?

Your phone is supported if it appears in the list below.

C3530, Ch@t 335, Ch@t TXT, Chat 335, Chat TXT, Diva S3550, GT-C3530, GT-S3350, GT-S3353, GT-S3550, S3350, S3353, S3550, SGH-C3530, SGH-S3350, SGH-S3353, SGH-S3550, Shark S3550, Shark Slide, Shark Slider, Shark3

Can Unlock Samsung INFINEON service solve my problem?

If you have same or similar screen/messages on your phone then Unlock Samsung service can help you disable these screens.

Invalid SIM Card
Phone locked. Return for service
SIM lock – Enter password

What do I need to unlock my phone?

• Windows XP/Vista/7 based computer (both 32-bit and 64-bit versions are supported)
• USB cable for your Samsung phone

How to buy credit?

Create a new account at FastGSM.com website if you do not have one already. Login to My Account

You need to purchase the service only if don't have sufficient count of credits on your FastGSM account. If you already have the credits on your account you can simply skip purchase of the service.

Go to www.FastGSM.com, select manufacturer in Select your phone and your phone model. It will show your phone detail page. Choose service you need and click Buy now! button. Click on Go to Checkout. Select your country, read our Terms and conditions, check I accept fastgsm.com conditions checkbox and click on desired payment method button. Now complete the payment.

Installing the device driver

Close Samsung PC Studio, Samsung Kies & Kies TrayAgent and any other applications that might use COM ports & Modems.

Download and install Drivers for Samsung.

Read your unique unlock codes via USB

Download and run Unlock Samsung Client

Type email and password for your FastGSM account,select your phone model and click on NEXT button.

Go to Menu > Settings > PC Connections and select Samsung Kies and hit Save button.

Connect USB cable to your computer and then to the phone. Wait until all device drivers are installed.

Click on NEXT button again and wait until you see

Please disconnect phone from cable, power phone off and connect it to cable!!!

message. Disconnect the phone from USB cable and power off the phone. Reinsert battery.

Now press and hold * key on phone keypad and plug USB cable back to the phone. Once the phone is detected you can release * key.

Now wait until the unlock codes are shown. It can take few minutes. You will see codes similar to below.

UNFREEZE CODE : #0199*11111111#
NET UNLOCK CODE : #0111*22222222#
SUB UNLOCK CODE : #0133*33333333#
SP UNLOCK CODE : #0121*44444444#
CP UNLOCK CODE : #0141*55555555#
SIM UNLOCK CODE : #0149*66666666#

Don't type these sample codes to your phone! Every phone has it's own unique set of codes.

Typing your unique unlock codes

Disconnect your phone, switch it on without SIM card. Now type all provided 6 unlock codes one by one. to your phone. After typing each of them hit call key.

If you get Not Personalized message, don't worry. It only means that phone is not locked to that lock level.

Now your phone is permanently unlocked and you can use it with different network SIM cards. It will never lock again even if you reset or update your phone software.