How to prevent Apple devices from calling or texting at the same time?

Block incoming calls from other devices

On the iPhone Settings -FaceTime page, turn off the "mobile phone" option, so as to ensure that incoming calls from mobile phones will not appear on other devices. However, at this level, other devices cannot receive the call reminder at the same time, and the call cannot be switched between different devices. The good thing is that this operation is relatively simple. You can close the connection when you are busy and open it again when you are free.

Turn off iMessages for iPad.

Turn on Messages in iPad settings and turn off the iMessages option, so that you won't receive iMessages again.

If you still want to receive information, but just hate to hear a "ping", set "notification sound" to "None" in Settings-Notification-Information.

If you don't want to hear a sound or see a new message pop up, then turn off Allow Notification.

Turn off iMessages for Mac.

Of course, you can just remove the voice and notice and continue to keep the acceptance information. Open System Preferences-Notification-Information, and select "Message Prompting Method" as "None", and the notification function will be closed.

If you want to keep the notification and only turn off the sound, you will do nothing but cancel the "Play the sound of the notification".