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  1. nate0's Avatar
    Im using the Verizon model Elite X3. I enabled in the registry the needed keys to make available wifi calling. I never have used the feature but am wondering if it works and how to test it? Any ideas how to verify it actually works?

    In a registy editor go Under the Key: HKLM\SOFTWARE\Microsoft\Cellular\MVSettings\IMSISpecific:

    Over there, you will see a key with a numeric name, that's where the WiFi calling can be enabled; if there are more of those keys listed, figure out which IMSI is active. Open it, open CellUX, then look for the keys named ShowWiFiCalling, ShowWiFiCallingPreferences and DefaultWiFiCallingPreference. Open them up and change the value inside from 0 to 1. If the keys are not there, create them manually. These are Integer Dword values.

    HKLM\SOFTWARE\Microsoft\Cellular\MVSettings\IMSISpecific\<active imsi number>\CellUX
    Add and/or set these keys to 1

    DefaultWiFiCallingPreference - set to 1
    ShowWiFiCalling - set to 1
    ShowWiFiCallingPreferences - set to 1

    ShowWiFiCallingPreferences - can be set to 1 or you can also set to 7 to show an additional 2 options in the drop down menu.


    HKLM\SOFTWARE\Microsoft\Cellular\MVSettings\IMSISpecific\Default\CellUX
    Add and/or set this key to 1

    ShowVoLTEToggle - set to 1

    - Enabling the VoLTE Toggle on the GSM model has no effect on enabling VoLTE on GSM. Seems HP has not supported this on GSM models yet. On the VZW model this enables the IMS registration toggle (VoLTE) which is already set up by default.
    Attached Thumbnails x3wificalling.jpg  
    Last edited by Nate W; 12-14-2017 at 05:31 PM. Reason: added the registry keys
    Dono Newcomb likes this.
    12-07-2017 10:55 PM
  2. PerfectReign's Avatar
    Wow that is nice! I so wish my X3 had WiFi calling.
    Last edited by PerfectReign; 12-07-2017 at 11:40 PM.
    12-07-2017 11:00 PM
  3. jes1888's Avatar
    Well, dunno about wm10, but in Android it's an icon that has the Wi-Fi logo with a phone, at least on my s8+, on my wife's iPhone it just says the words. Good luck though!
    12-08-2017 12:44 PM
  4. PerfectReign's Avatar
    I don't think W10M has VoLTE
    12-08-2017 02:34 PM
  5. nate0's Avatar
    I don't think W10M has VoLTE
    Why not?
    12-08-2017 03:28 PM
  6. mark233's Avatar
    I'm not sure about Verizon ... but this is what it looks like on my idol 4s with Tmo when I choose Wi-Fi preferred. Don't know if it makes a difference but my SIM is installed also.

    wp_ss_20171208_0004.jpg
    Dono Newcomb likes this.
    12-08-2017 04:23 PM
  7. PerfectReign's Avatar
    I take it back. I have two non carrier WM devices - 950xl and Elite X3. In the US at least the phone carrier sets VoLTE availability on the device. I've seen on XDA mentions of registry hacks for this but not in the US.

    Sent from mTalk on my 950xl
    12-08-2017 04:26 PM
  8. nate0's Avatar
    I take it back. I have two non carrier WM devices - 950xl and Elite X3. In the US at least the phone carrier sets VoLTE availability on the device. I've seen on XDA mentions of registry hacks for this but not in the US.

    Sent from mTalk on my 950xl
    I can enable hd voice/volte on the 950 xl and 950 dual sim. They are capable for sure.
    12-08-2017 04:43 PM
  9. nate0's Avatar
    I'm not sure about Verizon ... but this is what it looks like on my idol 4s with Tmo when I choose Wi-Fi preferred. Don't know if it makes a difference but my SIM is installed also.

    Click image for larger version. 

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    Thanks. Does it show that icon if you call your VM on Wifi? Also did you need to populate/fill out what is on the other end of the Emergency Adress button?
    12-08-2017 04:45 PM
  10. PerfectReign's Avatar
    I can enable hd voice/volte on the 950 xl and 950 dual sim. They are capable for sure.
    Grr. Left my 950xl at work. Was going to try.
    12-09-2017 09:27 AM
  11. nate0's Avatar
    Grr. Left my 950xl at work. Was going to try.
    I have only tested it working on AT&T. here
    Gravity Particle likes this.
    12-09-2017 10:52 AM
  12. nate0's Avatar
    I do not think I can get Wifi Calling to work officially on VZ with the Elite X3. Maybe on T-mobile I could Because I have a working example with the Idol 4s...

    Seems Verizon manages connected devices that are hd voice/wifi calling capable through the my verizion portal and my device is not showing up as a "Connected Device". I will keep looking at this but for now the feature is there and can be enabled, it's just that VZ is not supporting or HP is not supporting VZ with the Elite X3 at this time.
    12-09-2017 10:56 AM
  13. Dono Newcomb's Avatar
    Nate! So I have an x3 on AT&T, and you are saying I should be able to get this working?

    Unlocked Elite x3 Dual Sim...
    12-14-2017 03:43 PM
  14. nate0's Avatar
    Nate! So I have an x3 on AT&T, and you are saying I should be able to get this working?

    Unlocked Elite x3 Dual Sim...
    Enable this in the registry so that you can see the functions (drop down and settings)...yes.

    Will it work...I have no clue yet. I have not found a way to get it to work.
    12-14-2017 03:54 PM
  15. Dono Newcomb's Avatar
    So the interop tools is all I need? Any specific tutorial on this?
    12-14-2017 04:27 PM
  16. nate0's Avatar
    To be able to edit the registry you can follow the XDA forums directions for installing the latest working version of interop tools. I can share the keys to add...give me some time and I will add them to the post.
    12-14-2017 04:29 PM
  17. Dono Newcomb's Avatar
    Perfect, thanks man.
    12-14-2017 04:37 PM
  18. Dono Newcomb's Avatar
    :) I hope this works, if it does I will do it to my wife's 950XL and maybe my son's 1520.
    12-15-2017 07:52 PM
  19. Dono Newcomb's Avatar
    Hi, Nate... :D
    01-09-2018 03:48 PM
  20. nate0's Avatar
    Howdy. No go for the Elite x 3. However I figured out a way to enable Wi-Fi calling VoLTE and HD voice for T mobile on to the 950 XL. Still, testing, it. Working out some problems, but it works pretty well.
    01-09-2018 04:11 PM
  21. Dono Newcomb's Avatar
    Bummer man, lol. So I gather it highly dependent on the carrier? For instance it may or may not work unless I can get AT&T to enable it on their end?
    01-09-2018 04:27 PM
  22. nate0's Avatar
    Bummer man, lol. So I gather it highly dependent on the carrier? For instance it may or may not work unless I can get AT&T to enable it on their end?
    That is part of it. The other side of the coin is that the phone is capable, but we lack the capability to enable it ourselves. For the 950 XL and other Lumias, we have the ability to provision modem settings through an NVI update or modem configuration reset. Just like how it is possible to remove or add lockable LTE bands on many Lumia phones by using either nvi files or modemconfig cab files.

    I do not know enough about the Elite X3s modem/cellular settings in how they get provisioned or set to be able enable it. We know the registry settings enable it in the UI but that is as far as we get with the X3, for now.
    01-10-2018 12:45 AM
  23. Dono Newcomb's Avatar
    Okay Nate, thanks man for the info.
    01-10-2018 01:28 PM

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