Hii, In this post I’ll show you how to OEM unlock your Galaxy M02s phone

  1. Enable Developer options by opening
    Settings > About phone > Software information > Build Number(tap 7 times).

  2. Enable OEM unlocking by
    Setting > Developer options > OEM unlocking(enable).

  3. Enable USB debugging by
    Setting > Developer options > USB debugging(enable).

  4. Power off and boot into Download mode(Odin mode) by
    Press Volume up and Volume down (same time) and connect a USB cable.

  5. Click OEM unlocking using the volume keys and power button.

  6. Reboot your phone.