The iPhones in the house keep cutting out when we are on a call, whether we receive or make the call

[Marco15]

We don't understand why our mobile I-phones are cutting out when making or receiving a call.   Its ok if we are on whats app calls.  Generally streaming is ok, just slow at times from apple or amazon or Netflix, and sometimes the screen pauses for a moment before the TV program resumes working.

[Chrisee]

@Marco15 are your phones using wifi calling or are thry using the mobile signal? Voice calls only use WiFi if the  phone is set to use it and your mobile carrier permits its use otherwise they will use the mobile signal. Which can be compromised in your home.