Why does vivos7 suddenly have no notification sounds? There is no sound for incoming call notifications and no sound for text messages. So does the Internet. What on earth

Hello! Sorry for the inconvenience. Based on your description, we recommend that you try the following operations:

1. Click One-Click Acceleration (One-Click Cleanup) on the status bar of your phone or enter the program management on the desktop. Close background programs and clear cache files to increase available memory and avoid phone crashes due to insufficient memory.

2. Try to use "Settings-gt; General/More Settings-gt; Restore factory settings-gt; Restore all settings"

3. You can enter Settings-gt; General/More settings-gt; System upgrade-gt; Check for updates now-, download the upgrade package according to the prompts, click Verify and install, the phone will restart and automatically enter the upgrade mode to upgrade your phone's system.

4. Try to clear the abnormal data through "Settings-gt; General/More Settings-gt; Restore factory settings-gt; Clear all data". Note: This item will lose all user data stored on the mobile phone, including phone book, text messages, third-party application software, and related account information. Data stored on the T card will not be lost. Use with caution. (Pay attention to data backup)

5. Try to upgrade the firmware of your mobile phone.

You can go to /service.html to download the firmware upgrade package data for your mobile phone model. Firmware upgrade operation instructions/thread-1024055-1-1.html

If you have tried the above methods and still cannot solve the problem for you, it is recommended that you go to the after-sales service center to check your mobile phone. Please rest assured that after-sales service The technical staff of the service center will properly handle the problems encountered by your mobile phone. You can check the address of the after-sales service center in the settings-general/more settings-after-sales service menu of your mobile phone. You can also check the after-sales service center address on the vivo official website: /service/map.html

If you have any questions, you can consult us at any time. Thank you very much for your support of our vivo, and wish you a happy life!