Cannot send SMS, which means sending failed.

I would like to ask, "What is the reason for the failure of texting?" The reasons for this situation are poor signal, wrong number or insufficient storage space.

1. Bad signal: Make sure the cell phone signal is good and connect to mobile data or Wi-Fi network.

2. Wrong number: SMS center number may need to be set manually. You can find the SMS settings in the phone settings, and then confirm whether the center number is correct.

3. Insufficient storage space: Make sure the phone has enough memory to store new messages. If you don't have enough storage space, you can't send new messages.

4. Contact the operator's customer service: If the problem still exists, please contact the mobile operator's customer service for more detailed help.