From
this thread, it appears that Android phones have the option to set the preference. Any way to do this with an iPhone? I've already enabled WiFi Calling, and it works great when the signal strength drops to 2 bars or so, but I'd like to use it whenever I have adequate WiFi, regardless of network strength.
Help?
I'd love to be able to do this as well. I have a T-Mobile and an AT&T iPhone, and between the two T-Mobile did the WiFi calling 100% right. AT&T blundered as usual. With T-Mobile, the phone prioritizes wifi calling. You can be on 5 bars sitting on top of a cell tower, and it'll still use wifi calling before cellular.
Why is this good? Because WiFi calling has about 1/4th the latency (assuming you're on good internet) of cellular calling. Might not seem like much, say 9 ms via cable modem vs 30 ms on a cell connection, but it makes a huuuuuuge difference in call quality. Feels like talking on a landline, clear, true full duplex, it's like having a conversation in person.
I would LOVE to be able to force my ATT phone to go wifi first, cellular second. If anyone has figured a way to do it without turning off cellular, please share!