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I have the vivo XI + on the TMobile network 128gb/6gb And have found No wifi calling option in the settings menu. (Contrary to what some have said here) Perhaps those people mistakingly confuse using services like "what's app and wechat" which do work,.. as wifi calling Instead of "real wifi calling" which is, "Dialing a normal number" using WiFi instead of a cell tower signal. For what it's worth, I also actually called TMobile tech support... and they told me only TMobile specific phones do it... NOT unlocked phones bought elseware.
Sorry, there was a problem. Please try again later.Yes, this phone has WiFi calling.
Sorry, there was a problem. Please try again later.Yes, makes clear calls with a good internet connection once you enable wifi calling in the settings.
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