Why do you read comics with vivo mobile phone? The phone will suddenly restart.

Which model do you mean? Please describe it in detail. According to your description, I suggest you try the following methods:

(1) The mobile phone slides the status bar and clicks a key to accelerate.

(2) click "Settings->; System upgrade-> Check for updates now upgrade to update your system.

③ Set the phone to Settings-More Settings-Restore Factory Settings-Clear all data. Clearing data will lose data. It is recommended that you make a backup before clearing the data.

If you have any questions, please feel free to consult us. Thank you very much for your support of our vivo. I wish you a happy life!