C2 VoLTE provider support

Done! Thanks for reminding me!

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Sailfish OS Version: 5.0.0.29
SIM provider and country: O2 Telefonica, DE
Network provider and country (if roaming): n/a
Number of SIM cards in use and in which slot: 1 / 1 & 2

Country Provider Registered Voice in Voice out SMS in SMS out MMS in MMS out Compared
DE O2 βœ“ βœ“ βœ“ βœ“ βœ“ βœ“ βœ“ βœ“

I am really impressed with how robust the VoLTE service is.
My first surprise was the dial tone on call, which is a great improvement over the implementation on my Sony Xperia 10III. Sending text messages also works flawlessly, which was also not the case with the Xperia 10 III.

Sending and recieving MMS from Xperia 10 III (on SFOS 4.6.0.15) to the C2 and vice versa was successful.

In addition to the documented test cases, I also successfully held a call and started a new call at the same time. However, it was not possible to start a three-way conference. (The active connection went silent and the inactive connection remained on hold)

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In 5.0.0.43 release SI Bob SIM does register but Hot still doesn’t. Wiki updated. More tests follow.

5.0.0.43:

Country Provider Registered Voice in Voice out SMS in SMS out MMS in MMS out Compared
DK 3 βœ“ x βœ“ βœ“ βœ“ x x
DK Yousee βœ“ βœ“ βœ“ βœ“ βœ“ βœ“ βœ“

On my 10iii VoLte problems is almost reversed, except from MMS things work on 3’s network, but calls in and sms out does not work on Yousee network.

Please edit the first post with your info.