My Apple 7plus can't send text messages. What happened? Who knows?

1. Call the customer service phone of the local operator, ask the number of the SMS service center, and then set it;

2. For example, for a mobile phone number, first open the dialing page on the iPhone, enter * 5005 * 7672 *+8613800WZD00 #, and then click Dial. (Note: WZD is the area code of the region, for example, Wenzhou is 0577, so you don't need to add 0 before the area code, just enter 577. The SMS service centers of different operators are different, so it is best to call directly to ask, and the problem of not sending SMS can be solved by setting;

3. If it doesn't work after setting, please try to restore the network settings, as follows: Open the settings of iPhone, and then click General, Restore and Restore Network Settings;

4. You still can't send text messages. Please dial out the mobile phone card and insert it again, or try to send a short message with another mobile phone. If you can't send a text message, it may be because the SIM card is broken.

5, can't send text messages, open the iPhone settings to see if the flight mode is closed because of the flight.