How do I tell other users/contacts that my iMessage is turned off? I frequently turn my son's data plan off mid-month because he eats up most of our shared data.
When I do this, however, he no longer can receive iMessages until he is connected to WiFi. The sender doesn't usually receive a message of "not delivered" for some reason or if they do it's hours later. Non iPhone messages are not a problem which I understand why. It is just iPhone to iPhone messages. It appears both parties have to turn off I-message for it to be seamless.
Is there a feature that alerts a text sender that the recipients iMessage is off; "please send as SMS"; besides the delayed "not delivered" notice?