Nexus S GT-19020T Android Smart Phone unlocking

Yes, you can unlock it. By the way, unlocking the FRP or bypassing a google account is getting hard day by day but it is still possible. Going through some steps will let you unlock your device bypassing the google account.

• Download the FRP Bypass APK from the computer or through any device.
• Now, you have to place the tool in a USB drive.
• Turn on your device
• Follow the guided process until you reach to the google account including part
• Connect your device to the USB drive
• Install the FRP Bypass APK
• Open the app and go to settings
• Factory reset your device. then click on erase everything and confirm

for more details visit FRP Bypass APK

here have some links which may help u
How to Unlock LG Google Nexus 4 E960
How to unlock LG Nexus 4 E960 sim unlock net

sign in account google first

No need to unlock, the phone is already unlocked. What this means is that the phone should work with ANY of the GSM carriers listed at the following website:
http://www.unlockedshop.com/a-full-list-of-gsm-carriers-in-the-usa/

Hi. What is the exact model of your Samsung phone? If you want to unlock your Samsung Galaxy S4, you can unlock it safer and easier using unlock code. You can get the accurate unlock code for your Samsung Galaxy S4 from ProUnlocking.com at affordable cost.

-<()>--<()>--<()>--<()>--<()>--<()>--<()>-
..............UNLOCKING INSTRUCTIONS..............
-<()>--<()>--<()>--<()>--<()>--<()>--<()>-

Method 1:
1 - Switch ON your Samsung Galaxy S4 with a NOT ACCEPTED SIM Card.
2 - Samsung Galaxy S4 will ask for "Password".
3 - Enter the Unlock Code.

OR (if the Samsung Galaxy S4 shows "Insert Correct SIM Card")

Method 2:
1 - Switch ON your Samsung Galaxy S4 with a NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung Galaxy S4.
3 - Compose : #0111*CODE#.

Hi. You can unlock your Samsung Galaxy Discover safer and easier using unlock code. You can get the accurate unlock code for your Samsung Galaxy Discover from MobileUnlockSolutions.com at affordable cost.

-<()>--<()>--<()>--<()>--<()>--<()>--<()>-
..............UNLOCKING INSTRUCTIONS..............
-<()>--<()>--<()>--<()>--<()>--<()>--<()>-

Method 1:
1 - Switch ON your Samsung Galaxy Discover with a NOT ACCEPTED SIM Card.
2 - Samsung Galaxy Discover will ask for "Password".
3 - Enter the Unlock Code.

OR (if the Samsung Galaxy Discover shows "Insert Correct SIM Card")

Method 2:
1 - Switch ON your Samsung Galaxy Discover with a NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung Galaxy Discover.
3 - Compose : #0111*CODE#.

Hi, you can get the unlock code for a Samsung C120 from www.unlock-zone.com/samsung-c120/rs16wp9/ at low cost

-<~()~>- -<~()~>- -<~()~>- -<~()~>- -<~()~>- -<~()~>-
UNLOCKING STEPS FOR A SAMSUNG C120:
-<~()~>- -<~()~>- -<~()~>- -<~()~>- -<~()~>- -<~()~>-

Method 1:

1 - Switch ON your Samsung C120 with a NOT ACCEPTED SIM Card.
2 - Samsung C120 will ask for "Password".
3 - Enter the Unlock Code.

OR (if the Samsung C120 shows "Insert Correct SIM Card")

Method 2:

1 - Switch ON your Samsung C120 with a NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung C120.
3 - Compose : #0111*CODE#.

Check the following service, it works if your phone is locked to a provider from Europe, USA, Canada, Australia or Latin America: http://www.fastgsm.com/en/samsung/samsung/e1230/network-unlocker

Nexus S has a dedicated Graphics Processing Unit (GPU). Playing mobile games, browsing the web, and watching videos are fast, fluid, and smooth. It's like having a pocket-sized multimedia and game console. (http://www.samsung.com/us/mobile/cell-phones/GT-I9020FSTTMB)
You can read the Samsung Nexus S Android Smartphone GT-I9020T user's manual at these websites:
1). http://www.samsung.com/us/support/downloads/GT-I9020FSTTMB 2). http://www.samsung.com/us/documentation/tmo/GT-I9020T/TMobile_i9020T_Nexus_S_Virtual_User_ManualGuide/index.html