Samsung SM-N900A AT&T Unlock Done

Samsung SM-N900A AT&T Unlock Done With Z3x Box With In SEC
Android Ver 5.0 With Out Rooting


    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'.
  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-N900A
Selected port: COM227 SAMSUNG Mobile USB Serial Port
Software version: 24.1

Reading phone info...
Reading IMEI... OK
IMEI: 358579053126372
Unlocking... OK
Reseting... OK
Unlock done

Done with Samsung Tool PRO v.24.1