Factory Reset Protection (FRP) is a security feature on all Android devices running Android 5.1 and higher, including the OPPO A40. It is designed to prevent unauthorized access if your phone is lost or stolen. Once you set up a Google account (Gmail) on the device, FRP automatically activates. If someone performs a hard reset via recovery mode, they will be forced to enter the last synced Google account and password before the phone can be used again.
The pursuit of FRP bypasses sits in a legal gray area. While manufacturers like OPPO implement these features to comply with global security standards, the right to repair and reuse hardware is a growing concern. Bypassing FRP can be seen as: