How is it that a mobile phone can make a phone call but can't send a text message?

1. SMS center number is wrong. You can contact the operator to retrieve the center number.

2. The mobile phone is out of memory.

This system is defective. Suggest redrawing a stable system.

4. There is something wrong with the security software settings of the mobile phone. Maybe the software blocked the message.

reference data

Baidu knows. Baidu knows [reference time 20 17- 12-26]