4G calling on S7

[dougwzz98]

I've just activated WiFi and 4G calling on my Samsung S7 Edge. It all seems to be active, the My O2 app says it's on, and I have activated the 'WiFi calling' and '4G calling' toggle switches in Settings.

However I've noticed that when not connected to WiFi (i.e. on the cellular connection) as soon as I start a call the 4G icon in the status bar immediately drops back to H+ and stays like that for the whole call. As soon as the call finishes it goes back to 4G.

So do I really have 4g calling active? Anyone else seeing this behaviour?

Thanks.

[dougwzz98]

So I've done some more tests, if I put the phone on the floor in the middle of the house i.e. worst place for cellular signal then bingo, I get the IWLAN phone/wifi icon pop up and it looks like wifi calling is enabled. Can make/receive calls, icon stays there until I move the phone off the floor i.e. back to reasonable cellular signal then icon disappears. So looks like WiFi calling is OK.

Still not a hint of 4G calling. I wonder if my location is just not enabled for it? I'm guessing that just because you have a solid 4G signal (and I do) doesn't mean you are automatically in a 4G calling area, I assume like other improvements it's being rolled out in stages across the network?

[MI5]

Is 4G Calling available everywhere?

We have successfully rolled it out in Belfast, Bradford, Coventry, Edinburgh, Leicester, Liverpool, Newcastle, Nottingham, Sheffield. Watch the space for other cities.

http://news.o2.co.uk/2017/03/29/wifi-4g-calling-comes-o2/

[dougwzz98]

Thanks for the link MI5, the network coverage map indicates 4G calling is enabled in my area. I think the problem is my expectations of it...I thought it would work (at least at some level?) for any type of voice call. Having looked into it some more I think I'll only see it active if I'm calling (or being called by) another mobile on a 4G network where that mobile is also enabled for 4G calling. I can't test that at the moment, but it makes sense I think...

Thanks for the help.