Enable by tapping "Build Number" seven times in Settings .
These video guides provide visual walk-throughs for unlocking the bootloader and flashing the A217F U7 root files: Enable by tapping "Build Number" seven times in Settings
After the phone boots, install the Magisk APK to manage root permissions . Enable by tapping "Build Number" seven times in Settings
Download the that matches your current build . Enable by tapping "Build Number" seven times in Settings