Guide to enable UMA on an unlocked 9800 for T-Mobile
Guide to enable UMA on an unlocked 9800 for T-Mobile
This won't work for AT&T as they don't support UMA calling (But the E-Screens are interesting anyway)
1. Go here and follow the instructions to unlock the Engineering screens. Press ATL+CAP+H on your berry and use that info to fill in the blanks on the linked page.
Zibri's Blog: Hidden things are usually the best :)
2. Enter the code provided on the blackberry's help screen, you wont actually see anything while you're typing but when you're done the hidden Engineering screens will appear. Use alt for numbers and dont worry about caps.
3. Download these certificates to your blackberry. (NOT TO YOUR PC) (see post #2 by otto on the linked page)
T-Mobile UMA Certificates - Port3101.org : Your BES Connection
Then Reboot your Berry ALT-CAPS-DEL
4. Once you have the certs and have rebooted go back into the engineering screen ATL+CAP+H and do the following.
i. At the EScreen select <Mobile Network Engineering Screens
ii. Select <Utilities>
iii. Select <Session Manager>
iv. Press the BlackBerry menu button and select <UMA Options>
v. Press the BlackBerry menu button and select <New>
vi. Enter the following: Display Name: T-Mobile Operator Name: T-Mobile UMA Protocol version: 1.0.3
vii. Unselect <use default UNCS> 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, inv. Engineering and Operations CA
Rebewt and you are all set.