thanks all ae cuối cùng đã done UNLOCK INSTRUCTIONS: Phone must be rooted! If the software can't root the phone automatically, then you must root your device manually. 1. Power on the phone. 2. Tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options', go to 'Settings'-'Developer options' and enable 'USB debugging'. 3. Connect the phone to PC with USB cable, install drivers if needed. 4. Press 'Unlock' button for direct unlock or 'Read codes' to read security codes. Operation: Unlock Selected model: SM-G925T Software version: 22.4 Waiting ADB device... OK Reading phone info... Model: SM-G925T Android version: 5.0.2 Product code: SM-G925TZDATMB Phone version: G925TUVU1AOCG PDA version: G925TUVU1AOCG CSC version: G925TTMB1AOCG CSC country code: USA CSC sales code: TMB HW version: REV0.2 Phone S/N: R58G5214SBN Modem board: SHANNON333 RF cal date: 20150526 IMEI: Checking Super user right... true Reading nv data... OK Checking magic... OK Initialization AT RIL... OK Sending request to server... OK Waiting answer... OK Calculating... OK Writing nv data... OK Rebooting phone... OK Unlock done Done with Samsung Tool PRO v.22.4