Why does my mobile phone always "send failure"?

1, open the SMS settings.

2. Find the information center in SMS settings.

After opening, you will see the number of your information center. If it is not a string of numbers of +86, then this is one of the reasons why you failed to send SMS.

In the process of using the mobile phone, due to misoperation and other factors, the number of the short message center will be inadvertently changed. For example, it is wrong to have a mobile phone number that starts with "13" and ends with "00" as shown below.

4. So how do we find the correct number of SMS center? Enter +86 13800***500 in the Number column of the information center, and then click OK.

Special note: * * * is the last three digits of the area code where your number belongs, +86? Be sure to add, especially the+sign, otherwise it won't work. Other area codes can be found by querying the corresponding attribution.

5. After modifying the correct information center number, the short message can be sent successfully.