reynoldstm wrote:
Both of us have iPhones. I don't always leave my cellular data on and he rarely turns his on.. so I guess we need to either both use it or turn it off, or leave the data on? iMessage is a pain in the butt!
Then go into settings -> messages -> send & receive then tap your AppleID and choose to sign out of your iMessage account. Then leave cellular data off and use plain old SMS text messaging instead. SMS text messages use your cellular voice channel so use no cellular data at all (of course they also cannot use wifi). MMS messages will require that cellular data be turned on though.
iMessages uses an internet connection - either wifi (when available) or cellular when wifi is not available. But when neither are available, iMessage can do nothing.