T-Mobile US wifi calling with OS 7.1?

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jcrewboy

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HoFo Member
Joined
Mar 20, 2012
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I just got the 9790 and updated it to 7.1.336 on T-mobile in US and do not have the wifi calling option. Is there some way to get this working? Does anyone else have it up and running?
 
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It is not a t-mobile branded phone. But I took a risk and tried this - it worked!!

UMA for Tmobile

although i didn't have to since the certificats came with the service books, but just in case (download these certificats on the phone directly)
http://www.twoeighteighty.com/uma_files/trustcert.der
http://www.twoeighteighty.com/uma_files/t-mobile_root.der

unincript the help screen using
Zibri's Blog: Hidden things are usually the best
http://www.zibri.org/2009/08/hidden-things-are-usually-best.html


1. At the EScreen select <Mobile Network Engineering Screens>
2.. Select <Utilities>
3. Select <Session Manager>
4. Press the BlackBerry menu button and select <UMA Options>
5. Press the BlackBerry menu button and select <New>
6. Enter the following: Display Name: T-Mobile Operator Name: T-Mobile UMA Protocol version: 1.0.3 (I used 1.0.4 i think)
7. Unselect <use default UNCS> and enter punc.t-mobileuncs.com use Port: 14001
8.Unselect <use default SEGW> and enter psgw.t-mobilesgws.com
9. Select the SEGW certificate named T-Mobile USA, ing. Engineering and Operations CA (OR SIMILAR BROWSE ALL TILL YOU FIND THE RIGHT ONE)
 
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