SM-T337A unlock done by 24.2

Micro-USB cable:
1. Phone must be powered on.
2. Type *#0808# and select ‘DM+MODEM+ADB’.
3. Type *#9090# and choose USB (or ‘DM/DUN over HSIC’).
4. Reboot phone.
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-T337A
Selected port: COM113 SAMSUNG Mobile USB Serial Port
Software version: 24.2

Reading phone info…
Reading IMEI… OK
IMEI: 353414061951642
Unlocking… OK
Reseting… OK
Unlock done

Done with Samsung Tool PRO v.24.2
5.1.1 Lollipop no need root