Check the number of SMS center, taking vivo mobile phone as an example, there are the following steps:
First, find the phone's "Settings":
Second, open the settings, find "information" and click to enter:
Third, find "more settings" in the information:
Fourth, in more settings, check "SMS Center Number":
5. In the pop-up window, you can see whether the SMS center number exists:
Remarks:
1, the number of SMS centers varies from region to region.
2. If you can't send short messages, you can consult China Telecom's customer service telephone number: 10000.