On your Oppo A92, go to Settings > About Phone > Tap on 'Build Number' 7 times to enable Developer Options. Then, go back to Settings > Developer Options > Enable 'OEM Unlock' and 'USB Debugging'.
Don’t panic. If you own a UMT (Universal Master Tool) dongle, you’re in luck. We have a verified method to remove the pattern lock, PIN, or password on the OPPO A92 without wiping user data (though a full wipe method is also available). oppo+a92+pattern+unlock+umt+verified