Go to Settings > About Phone > Build Number and tap on it 7 times. You'll see a message indicating that you're now a developer.
Which is the phone originally from? What Android version is your device currently running? Share public link bootloader unlock allowed no to yes
Go to Settings > Developer Options > OEM Unlocking and toggle it on. This option might be labeled differently on some devices. Go to Settings > About Phone > Build
Even after enabling OEM Unlocking, you might still be stuck with a "Bootloader Unlock Allowed: No" status. When this happens, it usually indicates a . Go to Settings >