: Power off the device and remove the back cover and battery.
: Accessing the Android recovery menu (Volume Up + Power) allows for a "Wipe Data/Factory Reset" without hardware modification, provided the device isn't FRP locked. Nokia Ta-1452 Test Point UPD
In the world of mobile repair, "Test Points" are physical locations on the phone's circuit board used to force the device into a specific service mode (like : Power off the device and remove the back cover and battery