Why can't Apple send text messages? The mobile phone has a phone bill

Apple phone because you can't send text messages.

Short message service center is not set or set incorrectly.

Contact fault of SIM card

Turn on flight mode

Using a mobile phone to send messages or advertising messages, resulting in the number being blocked by the operator to send information.

If you want to restore the function of sending short messages, you can follow the following steps:

1. If the SMS service center is not set or set incorrectly, the solution is as follows: call the customer service phone of the local operator, ask what the number of the SMS service center is, and then set it.

2. If you still can't send SMS after setting, please try to restore the network settings, as follows:

Open iPhone- Settings-General-Restore-Restore network settings.

3. If the SIM card is in poor contact or the SIM card is invalid. Please dial out the mobile phone card and insert it again, or try to send a short message with another mobile phone. If you still can't send text messages, it's because the SIM card is invalid.

4. Open the iPhone settings to see if the flight mode is turned off because the flight is turned on.

5. If the number is blocked by the operator due to using the mobile phone to send messages or advertising messages, you can only contact customer service to solve it.