My mobile phone receives text messages 8 hours faster than normal, and the time zone setting is normal.

Hello, you can try upgrading. There are two ways to upgrade by yourself on your mobile phone:

(1) You can upgrade online through wifi: go to Settings->General->System Upgrade- >Check updates now-, follow the prompts to download the upgrade package, click Verify and install, the phone will restart and automatically enter upgrade mode.

(2) Use vivo assistant to upgrade: vivo assistant download address:/download/app_download.php?do=dn&type=&id=251 After downloading the program on your computer and installing it, open vivo assistant on your mobile phone Connect to the computer. After the tool detects the mobile phone, it will access the server. When it detects new software on the server, the word "new" will be displayed on the "Mobile Phone Upgrade" button. Click the button and follow the prompts to upgrade. Thank you for your support of vivo and wish you a happy life!