It seems most people have missed the point of your post wanting to allow people to call you on the same number. I don't know of an app that does this, however I can think of a work around. Using any one of the services suggest for VOIP service, you can forward your regular phone number to the VOIP phone. Your in house phone will ring any time someone calls your cell phone and you are out of tower range. There is of course the inevitable switch point in which people will not be able to reach you. But I'm sure you knew about that when you assumed you'd be able to do wifi calling.
Davey
04-11-2018 06:24 PM