Your phone reboots to a black screen with small "FASTBOOT" text. Congratulations! Your variant supports Fastboot. You can now use fastboot devices and fastboot oem unlock .
To open Fastboot mode on your Oppo A37, follow these steps: how to open fastboot mode on oppo a37 verified
: Use the Volume Up and Volume Down buttons to scroll through menu options. Your phone reboots to a black screen with