Nhẹ nhàng lắm các bác ạ 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. Operation: Unlock Selected model: SM-G920W8 Software version: 21.8 Waiting ADB device... Please, allow USB debugging on phone... OK Reading phone info... Model: SM-G920W8 Android version: 5.0.2 Product code: SM-G920WZDATLS Phone version: G920W8VLU1AOCG PDA version: G920W8VLU1AOCG CSC version: G920W8OYA1AOCG CSC country code: Canada CSC sales code: TLS HW version: REV1.0 Phone S/N: RF8G505BQJR Modem board: SHANNON333 RF cal date: 20150506 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.21.8