British carrier Three has seeded a carrier settings update—version 27.1—that enables native Wi-Fi calling on iPhones.

Three previously required iPhone customers to use its free Three inTouch app for Wi-Fi calling, but the carrier settings update released on Friday introduces system-level support for Wi-Fi calls and texts under Settings > Phone > Wi-Fi Calling.
We know that sometimes you can't get signal when you're indoors, but that shouldn't mean that you have to go off the grid. With Three inTouch Wi-Fi Calling, you can call and text whenever you're on Wi-Fi in the UK, even if there’s no mobile signal.
Three joins EE and Vodafone among carriers in the U.K. with native support for Wi-Fi calling on iPhones.

















Top Rated Comments
This is a good step. I still won't switch back to Three though - EE has 4G in far more places, and faster speed too.
On beta 3.
Wifi calling is now active, turns out the live chat support people know nothing, who would have guessed...?
Are Wifi minutes included in your allowance or are they unlimited/reduced? (I have an unlimited call contract so it wouldn't affect me - I'm just curious)