Failed to send SMS bound to mobile phone number display.

Does the subject want to ask, "What should I do if I fail to bind my mobile phone number to send a text message?" ? Make sure the mobile phone number is entered correctly, and check the network connection.

1. Confirm that the mobile phone number is entered correctly: confirm that the entered mobile phone number is correct and is a valid mobile phone number in use.

2. Check the network connection: Make sure the mobile phone is in a good network environment, and you can switch to a different network or location to send SMS again.