Open “Accessibility.”. Go to “Touch.”. Go to “AssistiveTouch” and enable it by tapping “On.”. Go to your home screen and tap the AssistiveTouch button. Once in the app, tap [ Click image to view full size ] Step 1: Fastboot, Recovery and Factory Mode It's simple, to do any complex functions on newer models, first the phone must be in. Fastboot Mode Turn off your phone. Press and hold the Volume UP button along with Power button on your device simultaneously for a few seconds. Use volume buttons to highlight ‘wipe cache partition’ and use If you have got a Celia or Google Assistant-enabled device, you can access it by the press and hold the power button for 1 or 2 seconds. Holding it for more than this timing will trigger the power menu. Increase the volume: Press the Volume up button to increase the volume. Decrease the volume: Press the volume down button to decrease the volume. Once you are in the settings you have to click on the option "System" then all the configurations that are in the operating system of the equipment will be displayed, it is necessary to press the option "Factory reset". This step will usually take a few minutes, after the device should turn on again and can be used. Ensure your Huawei Mate 20 Pro has a sufficient amount of battery power, if you try to reboot your phone with a critical amount of charge it may not turn on after the reboot. System updates can bring improvements that could fix your issue. Boot your Huawei Mate 20 Pro into Safe Mode. Press Power Button for a few seconds. Select the Safe Mode option. That’s it! Backup Data on Huawei Mate 20 Pro. Settings → Accounts & Backup. Click on Back up data. Press on Backup by Google One switch. Choose the preferred Gmail account from the top-right side. Factory Reset Huawei Mate 20 Pro Step 9: Press volume down button to move Wipe data/factory reset. Step 10: Press power button to select. Here you can see Warning message: To avoid system error, please do not press and hold the power button. Step 11: Wait until finish 100% process to factory reset Huawei P20 Pro and P20. Step 12: Press volume up button to move Reboot system now. gag0t.