How To Open Fastboot Mode On Oppo A37 Better !!exclusive!!
This is the standard way to enter Fastboot without needing a computer. : Completely turn off your device.
: If your phone keeps booting into Recovery instead of Fastboot, it might be due to a sticky Volume Down key or a firmware glitch that requires a Stock ROM flash via QFIL. how to open fastboot mode on oppo a37 better