Samsung SGH-I897 AT@T provider Outo root unock via z3x

[soLVer_tech]

Tools
CA 101 usb cable
Z3X GUI

Procedure

-Fully turn on phone
-Go to setting,Deleloppers option,enable usb debuging
-Run Z3X select correct model(I897)
-Connect phone to PC.install drivers if needed
-Tick direct Unlock
-Wait unlocking complete.

Screen shoot.
Model copy paste from google

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