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How to use VoLTE (AT&T HD Voice) on Lumia 950 Dual SIM (non-AT&T version)?
I am using a Lumia 950 Dual SIM (from Microsoft store and unlocked, non-AT&T version) with an AT&T SIM. The carrier logo shows "LTE" and the LTE data works well. However, when I call to another AT&T iPhone 6 (which is on LTE), the carrier logo changes to "4G", and the VoLTE (HD Voice) seems not work
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• Device Features
Where's the new Windows Phones?!
I was hoping to see something that was comparable to the Lumia 930/Icon on or coming to AT&T by now, but that's not happening. The 830 is supposed to be coming, but that's a lateral shift, not an upgrade. Come on, AT&T, where's our new flagship phone? Where's the heavy-hitter that's going to repl
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