How to cancel the old prompt on the screen when logging in to iMessage?

As long as the iMessage information switch is turned on in the settings interface of the Apple mobile phone, the above problem can be solved. Please refer to the following content for specific operations.

Tools/Materials: Apple 6s mobile phone.

1. First, click Settings on the desktop of your Apple phone.

2. Then find the message and click on it.

3. Finally, click to turn on the iMessage information switch.