Press and hold the Power button until the Power Off Menu appears. Tap Restart and confirm that you want to reboot the phone. If your device is not responsive, press and hold the Power key and the Volume Down key simultaneously and keep them both pressed until your phone restarts. Vivo Y51a soft reset process is takes a few minutes. How to hard reset on your vivo Y51a ? If you need to wipe your phone's data for any reason, you can perform a hard reset in recovery mode. This feature will completely erase your personal information and data from your device and make it 100% clean. How To Reset Vivo Y51a 0 Comments How to perform a virus scan on Vivo Y51a? If you want to perform a virus scan on Vivo Y51a you can follow the instructions. Virus Scan Vivo Y51a Developer Options RDdP.