No wifi calling button
My carrier runs on AT&T (Consumer Cellular). I suddenly had issues where my phone would not make or receive calls (WIFI calling as ALL carrier's signal are weak here). I went on line and purchased a newer used UNLOCKED phone (with WIFI calling capabilities) only after a week of calling different tech supports and jumping through hundreds of hoops, reset networks, etc. did I find out the you (AT&T) block all WIFI calling features on unlocked phones, even if they were on AT&T at some point. In this day and age, do you have a reasonable explanation why you do this?