[TheBattman]

I”m not so convinced that it is so “routinely handled” by iPhones... My last three (current 7+, previous 6+ and 6) all fumbled pretty badly when handling off from wifi to LTE. And recent iOS versions have been somewhat frustrating - about 25% of the time I have to turn off wifi to force it to make the transition to LTE. Rather frustrating.

[Swordmaker]

I”m not so convinced that it is so “routinely handled” by iPhones... My last three (current 7+, previous 6+ and 6) all fumbled pretty badly when handling off from wifi to LTE. And recent iOS versions have been somewhat frustrating - about 25% of the time I have to turn off wifi to force it to make the transition to LTE. Rather frustrating.

Mine never have a problem. Hmmmmm. Do you have WIFI Assist turned in your Cellular settings? That may be what is going on. If you have a weak carrier signal it will drop our frequently and go to a WIFI to take over the calling. I'd try turning it off and see what happens. . . but I generally have a strong LTE signal.