VoLTE has started coming to non-carrier models

[waqqas31]

I updated my SM-G9650 to the May 1st update (CSE7) yesterday and among the few welcome tweaks was the ability to (successfully) turn on VoLTE for both SIMs (tested working as well) and temporarily shift the active data SIM to the secondary SIM if you happen to be using it for your current call. Awesome!

There are also options to enable WiFi calling for each SIM.

 

[bigbot45]

That's encouraging to see....hope that shows up on my Unlocked US S9+ whenever it actually gets the May update.