I like the idea that I can leave my iphone at home and use wifi calling on my watch on previously used wifi....BUT I can only receive imessages but it would be nice if everything that requires an internet connection on my watch would work. If you have your iphone with you and bluetooth turned on yes of course everything will work and if you turn off bluetooth YES it will still work but if you restart you watch (just to test it) it no longer will connect but only to wifi calling. I really think Apple can improve on this and make the watch more useful without your iphone.