Unlock Samsung N910a 5.1.1 note 4 AT&T DONE UNLOCK INSTRUCTIONS: Micro-USB cable: 1. Phone must be powered on. 2. Type *#0808# and select 'DM+MODEM+ADB'. 3. Type *#9090# and choose 'DM/DUN over HSIC' (ignore it, if it's not available). 4. Reboot phone. Or use 'Activate Diag' function from 'Repair' tab. 5. Connect USB cable, install drivers if needed. 6. Select Samsung diagnostic port in port settings. 7. Press 'Unlock' button for direct unlock. Operation: Unlock Selected model: SM-N910A Selected port: COM106 SAMSUNG Mobile USB Serial Port Software version: 24.6 Reading phone info... Reading IMEI... OK IMEI: 356204063287336 Unlocking... OK Reseting... OK Unlock done Done with Samsung Tool PRO v.24.6