: Once the "Fastboot Mode" text appears on your screen, release all buttons. Method 2: Using ADB Commands
: Go to Settings > About Phone and tap "Build Number" 7 times. Then, go to Developer Options and toggle on USB Debugging . how to open fastboot mode on oppo a37 verified
To open Fastboot Mode on an Oppo A37, turn off your phone completely, then press and hold the Volume Up and Power buttons simultaneously until the Fastboot screen appears : Once the "Fastboot Mode" text appears on