Userdata | Oppo A37m

These terms are often used interchangeably. Both will wipe the userdata partition, restoring the phone to its original factory state. A "hard reset" usually refers to the method of doing this via the (using hardware buttons), while a "factory reset" is the term used for the option found within the Settings menu.

Wiping user data is irreversible. Before initiating a factory reset, it is highly recommended to back up your data through the OPPO Cloud or by connecting the phone to a PC to transfer files. oppo a37m userdata

If your phone warns of "Insufficient Storage," you need to clear unnecessary userdata: These terms are often used interchangeably

Deleting the userdata partition via fastboot ( fastboot erase userdata ) is the nuclear option that removes the lock. This is why technicians recommend flashing userdata.img to bypass pattern locks (though modern security patches prevent simple replacement). Wiping user data is irreversible