UMA for Torch 9810 on T-Mobile
This is interesting. I have an unlocked 9810 on the TMobile network, just installed the 7.1 OS, and followed these instructions with the following mods and was able to get WiFi Calling activated, although its not listed as UMA.
Originally Posted by xandermac
The WiFi Calling has a symbol in the upper right hand corner - above the WiFi bar - that is a rectangle that contains a graphic of a phone and a graphic of a WiFi bar. This seems to replace the graphic of the mobile network (the H+ / 3G / EDGE network).
Here is what I did with notes about the differences:
i. At the engineering screens (alt + caps + H) there was no mobile network engineering screens option - so I selected <Radio Engineering Screens (3GPP)>
ii. The <utilities> selection on this screen does not lead to a <session manager> selection on the following menu screen, so instead I selected <3GPP Radio Engineering Screens> instead
iii. selected <utilities>
iv. selected <session manager>
v. pressed the Blackberry menu button (left of the trackpad) and selected <UMA options>
vi. pressed the Blackberry menu button and selected <New>
vii. Entered the following: Display Name: T-Mobile Operator Name: T-Mobile UMA Protocol version: 3GPP rev. 6 (instead of 1.0.3 - although UMA v. 1.0.0 through 1.0.4 was also in the list of selections, and I also tried with UMA v. 1.0.4 and that worked as well)
vii. Unselect <use default UNC> and enter punc.t-mobileuncs.com use Port: 14001
viii.Unselect <use default SEGW> and enter psgw.t-mobilesgws.com
ix. Select the SEGW certificate named T-Mobile USA, Inc. Engineeri... (I did not have the original certificate exactly as listed in the original post: T-Mobile USA, inv. Engineering and Operations CA - although perhaps this was just a typo on the "inv." versus Inc. )
x. Pressed Blackberry menu button and selected <Save>
xi. Then a bunch of network communication occurred, and I got a WiFi calling pop-up that allowed me to test a warning alert that would be heard if I was in low WiFi signal range during a call
then I rebooted. I made a call with the mobile radio network turned "off" to verify that the WiFi calling was indeed enabled and working.
(although I managed to save the certificates on my media card, I don't think I ever installed them on the phone. When I clicked on them in the link at the first page, I got an error, and when I selected the link and pressed the Blackberry menu button, I saw no option to download the link. So I emailed them as attachments and downloaded the attachments to my media card. But I don't know if they were ever installed on my phone. If not, I must have had the required certs already there).
When I went to mobile network options, "Wi-Fi Calling Preferred" was already selected.
My only question - does anyone know if this WiFi calling (or the 3GPP rev. 6) is any different than UMA calling? I have seen some technical differences between UMA and so-called WiFi calling - but I'm not sure if that applies to the service that came up for me.