Unlocked UMA Blackberrys now loved by T-Mobile

Sunday, January 25, 2009 20:51
Posted in category Blackberry, Carriers, How-To's, RIM, T-Mobile

T-Mobile has in my opinion, one of the coolest, most useful features out of any of the carriers in the U.S., UMA, which allows you to make phone calls over WiFi, thereby making T-Mobile’s coverage virtually endless.  What’s even more appealing is if you sign up for a UMA voice plan, you can have unlimited calls on ANY WiFi network effectively eliminating your house phone.  Until now, only T-Mobile Blackberrys could use this feature.  However, now there is a way to use unlocked Blackberrys with TMO’s UMA service.  How you ask.  Keep reading.

*Instructions taken from Blackberry News*

1. On your BlackBerry, you need to download and install two T-Mobile certificates using these two links:

http://mobile.blackberry.com/resources/uma_help/files/t-mobile_root.der
http://mobile.blackberry.com/resources/uma_help/files/trustcert.der

2. You need to get into the EScreen. On your blackberry press and hold ALT CAPS and letter H DO NOT EXIT THIS SCREEN, the code generated is based on the uptime you enter.

3. Using your computer go to:

https://www.blackberry.com/EngineeringScreens/

4. Username: tmussales Password: TMUSsales

5. Enter the information from your blackberry on the computer EXACTLY as it appears. First Name and Last Name can be anything. For model number just pick 8300.

6. Don’t use GPS option or Zip code options.

7. You will receive an 8 digit unlock code.

8. On your blackberry and without leaving the screen that displays the information enter the code. For numbers press and hold the ALT key and for letters enter them directly without worrying about capitalizing the letters.

9. At the EScreen select <Mobile Network Engineering Screens>

10. Select <Utilities>

11. Select <Session Manager>

12. Press the BlackBerry menu button and select <UMA Options>

13. Press the BlackBerry menu button and select <New>

14. Enter the following: Display Name: T-Mobile Operator Name: T-Mobile UMA Protocol version: 1.0.3

15. Unselect <use default UNCS> and enter punc.t-mobileuncs.com use Port: 14001

16. Unselect <use default SEGW> and enter psgw.t-mobilesgws.com

17. Select the SEGW certificate named T-Mobile USA, inv. Engineering and Operations CA

18. You are all set.

So, there you have it.  If you try it out, let me know how it goes!

Source: Blackberry News

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