1. First, turn on the mobile phone, find the icon of SMS on the desktop of the mobile phone and click SMS.
2. After entering the SMS page, we can see 3 ... and then click. ....
3. After clicking three points, two options will pop up: Favorites and Settings. At this point, we click Settings.
4. After entering the SMS Settings page, we can see the SMS Center at this time, and then click the SMS Center.
5. After entering the SMS center, fill in the number of the SMS center and click OK. The number of the general SMS center is +86 1380xxxxx500.