Just so everyone knows: you should have no expectation that WiFi calling will work with 8.1 Developer Preview.
This feature is more than just an app, and the underlying software / services are not compatible with 8.1 as of yet.
It will never work on the 810 T Mobile has to enable it first and they have decided not to.
The 521 and 925 received an OTA patch to enable it from TM, with the 810 you're SOL.
I have the 925.
Text messages does not work for me, unfortunately. Phone calls seem okay.
Should have tested this on my 521 first. oh well.
I have a lumia 810 and yes text messaging works as does call +SMS filter. Wifi calling will NEVER work
Ok so I thought I posted this but if it comes up twice, forgive me.... So for me wifi calling works on my 925.... The problem is that when I leave an area that doesn't have wifi, my cellular data doesn't come back!!!!.. So I always have end up rebooting the phone... For days to resume... Anyone else having a similar problem?
I enabled the WIFI calling feature on my backup Lumia 521 and tried it for a couple of days , Issues, issues, issues, dropped calls, not able to send images through text messages..There is no WIFI calling feature on my 810 and that is fine with me..
Ok so I thought I posted this but if it comes up twice, forgive me.... So for me wifi calling works on my 925.... The problem is that when I leave an area that doesn't have wifi, my cellular data doesn't come back!!!!.. So I always have end up rebooting the phone... For days to resume... Anyone else having a similar problem?