While likely not the only issue - when reading the wifi FAQ page there is one glaring error.
Your device will prioritize a network connection over WiFi when the connection is strong enough to make and receive calls. To prevent using a cellular network to make or receive calls, put your phone in airplane mode and make sure WiFi is on.
this info can be found on this page https://www.xfinity.com/mobile/support/article/360001392186/how-do-i-use-wifi-calling-on-my-iphone
100% my phone should prioritize wifi calling when I am on wifi.
I don't know how this explains all the immediate 'call failed' when answering, but all of the mid-call drops ( which happen EVERY call if i don't turn on airplane mode to disable cellular service - which FYI DOES stop the dropped calls but is SUPER annoying to have to turn airplane mode on/off everytime I arrive or leave home ) after the drop you look and the phone has gone back to cellular calling vs wifi and the switch causes the drop.
Happy Thanksgiving, hope this helps... it will be a huge pain-in-my-rear gone if this issue is fixxed.
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I went into my Xfinity mobile store again about this issue. The person I talked to <Edited> told me that Wi-Fi calling doesn’t work for any carrier. <Edited I’m sure the conversation that followed was not the high point of his day. <Edited>
FYI- Although using airplane mode fixes a majority of the dropped calls - when I attempt to place a call to my father who has an Xfinity LAND LINE - the call will simply not work over WiFi. Ten attempts in a row will each instantly fail. Tried multiple days. Apparently his phone rings once, not once on my end. I have to talk to my father daily - so this makes using airplane mode even more inconvenient. It don’t understand why it’s not a simple fix for them.
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Resetting network settings can be done without erasing the phone, which I have done. It’s not a BYOD issue as there is at least one person on this thread that said “when the phones are paid off I’m switching”. It’s an xfinity and iPhone 6 and 6s issue it appears. My 6s is exactly the same as the ones xfinity sells. I bought it from Verizon and that’s the network Xfinity uses. There is no special firmware or hardware. It’s a cdma iPhone 6s - it’s that simple. Is there anyone having this issue on a iPhone 7 or newer? Maybe it’s time to go back to Verizon, as it does not appear this problem is going to be addressed by Xfinity. It’s been months and nothing and no reason to expect a solution is coming.
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My wife and I experience the same issues described here -very frequent dropped calls and instant drops upon answering. Often to call each other it takes 2-4 attempts. It’s not only frustrating but embarrassing as I’m always being asked “Why are you always dropping calls?”. Atm anyone I talk to frequently expects my phone service to be extremely flaky. It’s very frustrating during important phone calls. Like others, my cellular signal at home is poor so I rely on WiFi calling. When we switched to xfinity I was not told or aware they did not have WiFi calling at the time, I just assumed it was available. I was pleased when it did not take long for WiFi calling to be available - but in reality it basically does not work for iPhones. I have been into the Xfinity store and they don’t have any cellular specialty people, just regular cable knowledge, and the person in store is on the phone with tech support and returns with no solution, blaming my phone and telling me to buy a new one ( is mine different from the same one they sell? It worked fine until I switched carriers). Xfinity phone support also boils it down to a BYOD issue. Hmm...I doubt it. Xfinity offers no help- they have said to me on the phone they hear this issue a lot regarding iPhone 6 and 6s - and there is no solution. It certainly appears there is simply a problem with their handling of WiFi calling on some if not all models of iPhones
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