What's wrong with imessage activation? ?

The imessage of Apple's mobile phone cannot be activated. It may be because there is a problem with the network, which can be solved by restoring the network settings. Please refer to the following for specific operations.

Tools/materials: IPhone7plus mobile phone.

1, click Settings.

2. Click General.

3. Click Restore.

4. Click Restore Network Settings.

5. Enter the screen lock password.

6. Finally, click Restore Network Settings, and wait until the restoration is completed to solve the problem that imessage on Apple's mobile phone cannot be activated.