iPhone 7 iOS 11.0 not connecting to wi-fi calling

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Hello - I'm having issues connecting an iPhone 7, iOS 11.0, to calls over wifi. My work cell phone is through Verizon and the signal doesn't quite reach to our place (it does about 1/3 mile down the road). Calls over wi-fi were running fine, to my knowledge, until a few weeks ago - we had a momentary power outage and the iPhone X came out on the same day (which is ironic). I think I had one instance where the call dropped twice, but otherwise it was smooth. Ever since that day though, it is spotty at best. I am at 44ms, which should be enough latency for the call. Plus, for my personal phone, I have AT&T and use a microcell signal booster - was able to make a call just fine a short while ago, meanwhile the iPhone shows No Service and full bars for the wi-fi signal. Yet, yesterday the phone was showing VZW Wi-Fi from at least 7:00 PM - 7:30 AM (might have had outage while I was sleeping), it also had coverage for most of the day (dropped when I went too far outside, which is understandable) then it dropped back to No Service again around 7:45 AM today. I've tried updating the software a few times, updating iTunes, resetting the network settings, reinstalling the OS altogether, airplane mode - and nothing is seeming to work. At first when I would switch from our generic wifi to 5G, it would work, if I was toggling the settings and rebooting the phone. But now it doesn't work at all.

Im reading replacing the SIM card might work - but not sure if that would be the case on an iPhone 7. Although, maybe it would since I think it's likely an Apple software issue.

Not sure what happened... but it was running fine before. Seems like there's a disconnect between the phone and it realizing it needs to make a call over wi-fi. Thanks for any suggestions, I am technologically deficient, so any suggestions are welcome and appreciated. Dont know if going to the Verizon Store would help at all. I might end up brooching the subject of moving my work # to AT&T if I have to.
 
M

MacInWin

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Sounds like a router issue, or your ISP is occasionally dropping out from internet connection. The power outage may have upset the router or the ISP modem (Usually, those are together but not always.)
 
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Your Mac's Specs
iMac 2.66 GHz 20", iPad Mini2 32GB, iPhone6 64GB, Watch Sport 42mm Black, iPad Air 2 128GB
My iPhone6S+ seems to give Wifi Calls on any Wifi. I think it is the mobile provider that enables this, not your ISP. Mine is on EE in the UK.

Have you tried updating to iOS 11.0.1 yet?

Also, iOS 11.1 is now in Public Beta - not sure if that will help or if that is aimed at fixing the Battery life issues people have reported?
 
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M1 Mac Studio, 11" iPad Pro 3rdGen, iPhone 13 ProMax, Watch S7, 2018 15" MBP, AirPods Pro
Your phone has to be connected to your carriers network, in order for Wi-Fi calling to be used. Wi-Fi calling allows, your Mac, iPod Touch, or iPad, to use your iPhones carriers network to make the calls. So, if there is no connection, there is no calling.
 

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