Oppo A16: Unlock Bootloader

Go to Settings > About Phone and tap "Build Number" 7 times. Then go to Settings > Additional Settings > Developer Options and enable USB Debugging and OEM Unlocking .

Since the A-series lacks an official "Deep Test" app (which Reno series uses), you must try standard Fastboot commands, though they may be blocked by OPPO's firmware. Unlock Bootloader Oppo A16

You will need a Windows PC and a high-quality USB cable. Go to Settings > About Phone and tap "Build Number" 7 times

Do attempt unless you: