Son is not getting SMS texts on his iPhone - only iMessage to iPad
We recently got my son a iPhone so we can stay connected via family sharing, find my, etc. We got him a talk and text plan - no data. The problem is that I cannot text him on his phone if he is not connected to wifi. I have my settings enabled to send as SMS, but if he is not connected to wifi, the messages do not go to his phone, rather they go to his iPad, which is kept at home. He can text me, but my replies got to the iPad, which is connected to iMessage. I need to be able to send him SMS texts when he is not connected to wifi.
We don't want to disconnect the iPad from iMessage because he does use that when he is home to message friends and family. He prefers messaging with the iPad.
Remembering to turn off iMessage on the iPad every day is not a realistic solution.
And changing the iMessage settings on the iPad to only send and receive messages sent to the email address only works until he sends a message to me, then all of my replies go to the iPad.
The only solution I have found that could work in that situation would be to add his phone number and email address as separate contacts. But that seems cumbersome and relies on ALL of his contacts to do that - including elderly grandparents, friends, and emergency contacts. We need to know that he is ALWAYS getting his messages, even when he is not connected to data or wifi. This is the main reason we got him a phone.
How can we set his preferences so that ALL messages go to his phone - either as SMS or as iMessage (depending on whether he is connected to wifi) and not to go to other devices instead of the phone?