I get an error message on a second phone number on the same Apple ID -- says "you must have a SIM associated with an Apple device for XXX (phone number) to be used for iMessage and FaceTime - but, it is linked to an iphone 13 with IOS 17.5.1 - any way to have two phone numbers share an appleID and imessage and facetime?
So your iPhone 13 uses its telephone number for iMessage and FaceTime while this iPhone, using the same Apple ID, uses its own separate number for iMessage and FaceTime?
Why not ask the folks you’re iMessage and FaceTiming with to simply access you using your Apple ID, which presumably works on both devices?
On your iPhone, at Settings > [your Apple ID] > Sign-In & Security > [Email & Phone Numbers] Edit > Add Email or Phone Number > Add a Phone Number — do you see this screen?
Thanks I did that and that is when it presented the message.
Sharing Phone numbers on same apple ID
