Why is the SMS sending function disabled?

Reasons for disabling SMS sending function:

1. There is something wrong with the mobile phone settings, which prevents the mobile phone from sending short messages;

2.SMS function is disabled.

Solution to disable SMS sending function;

1, open the phone interface, and click phone settings;

2. Click "All Settings" to select more options;

3. Click the default SMS application, and then click Select Information to restore SMS functionality. You can send text messages at this time.