Yesterday, I got the problem fixed. To recap, I switched to vodafone over a year ago - sky EE & ID had failed me- my son used vodafone and when visiting him he switched his sim card into my phone and wifi calling worked - so I switched provider as all the other services had said I could get it, but were in breach of contract when they did not deliver. Back to yesterday: I logged onto My Vodaphone from my desktop and under settings saw the wifi calling was already ON. I decided to "reboot" (i.e to switch it OFF then ON to see if it made a difference). As soon as turned it OFF I got an on-screen message "this could take up to 8 hours to action" - so I thought by the time I switched ON again, that could take 16 hours (not too chuffed!). I then invoked the "Tech Chat" service and told the guy I'd spent days trying to sort this out when I moved into this house well over a year ago, and I was trying to switch wifi calling OFF/ON in an attempt to re-set and try again (but did not want to spend 16hours waiting for a result. He obliged, by doing it for me in a few minutes, then told me to switch off my phone and re-boot. I did, and my S7 Edge is now working. When I logged on here to reply with this update, samsung sent me a 2nd stage verification code, it came via wifi calling in seconds - yesterday when I contacted vodafone before they sorted this problem, they too sent a verification code to me - FIVE times! The whole point for me requiring wifi calling is a very weak mobile signal. I had to hang out of an upstairs window waving my phone like a lunatic until the code arrived, only to get back to the desktop to find the session had timed out. It took over an hour by the time I got a "quick code" and got back to my desk before time-out. Looks like that problem is now solved, so thank you for the query, as it prompted me to try again. The issue for me was with the cell phone service provider, not with Samsung, but some time over the last year they obviously fixed the problem. The most annoying thing in all this was Sky Mobile, who I'd been using for years had originally stated on their website that they supported my S7 Edge, but after blaming everyone else (me. Samsung, the retailer) they removed this model from their approved list. These phones are not cheap, but rather than get to the bottom of the issue they dropped the model - how many users like me did they mislead to our cost. Anyway, thanks Voda Tech Guy.
