Apple SMS has been sending failed.

The failure of iPhone SMS is usually caused by the failure of network settings, which can be solved by restoring the network settings in Settings. Take Apple 7 as an example, the specific operation is as follows:

1. Step 1: Turn on the phone and find it. Click "Settings".

2. Step 2: Drop down the settings page and click "General".

Step 3: In the page drop-down menu, find "Restore" and open it.

Step 4: You need to click the "Restore Network Settings" option on the page.

5. Step 5: You need to verify and enter the required password.

6. Step 6: After the password is verified successfully, select "Restore Network Settings" in the pop-up options, and the SMS is sent successfully.