No shot against AT&T here, but the reception in my home office sucks. It’s probably just the combination of zombie-proof glass, the custom kevlar/copper mesh in the walls, and the tin foil hat I wear, but I called the carrier about it anyway. They suggested I buy one of those mini cell site jobs for ninety bucks. Instead I spent several times that amount for a new phone because I heard it was capable of Wi-Fi calling i.e. using my internet connection to make and receive calls. Sure enough it seemed it was …
Unfortunately, even after upgrading the network I still experienced warbled voices and dropped calls, meaning pineapple and broccoli pizza showing up at my neighbor’s door. Very bad.
However, all was not lost. With a little network trickery – mostly tinkering with IP addressing and port forwarding – I was able to get consistent Wi-Fi calling. Crystal clear with near zero drops, and my favorite Chinese takeout joint is again accepting my orders. Very good.
Note that the instruction that follow were done using a plain vanilla iPhone 6s and an Airport Extreme, but that doesn’t mean the general premise won’t work with a Samsung Galaxy and old Linksys gear. All is being provided in as layman-esque terms as possible for this reason; technical types providing commentary such as “you didn’t define NAT correctly” will be punished via intentional disregard. Further, everything that follows assumes you have Wi-Fi calling activated. If not, read the instructions here for getting it running.