No prompt for text messages coming from vivo mobile phone

There is no prompt when receiving text messages. You can solve it by the following methods. The specific steps are as follows:

1. Confirm whether the speaker is faulty (if the speaker is damaged, you need to go to after-sales service);

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2. Enter Settings--Status Bar and Notification--Enable notification permissions for messages in Management Notifications;

3. Enter Settings--Sound--Message Ringtone--Change other ringtones;

4. In the standby interface, press the volume up key to increase the ringer volume;

5. Enter settings--more settings--restore factory settings--restore all settings/clear All settings (please back up the data on your phone before clearing all data).

Short message service (SMS) is part of the "converged communications" business plan. Users can directly send or receive text or digital information through mobile phones or other telecommunications terminals. Users can receive and send text messages each time The number of characters is 160 English and numeric characters or 70 Chinese characters. SMS is a telecommunications service that accompanies digital mobile communication systems. It transmits text or digital short messages through the signaling channels and signaling networks of mobile communication systems. It is a non-real-time, non-voice data communication service.