I've just made UMA working on my unlocked att BB 8900

[czaplin]

Hi folks.
Recently I bought BB8900 locked to ATT. My first step was calling CS and asking for an unlock code. It took 3 business days.

Next I found out that UMA is not working. After 3 hours I made it working

Follow these steps (it worked for me)
1. Go for instructions here:

AllUnlocks.com - UMA Unlocking

2. Certificates you need won't work from instruction site (expired links). You will obtain them here (use your BB browser):

http://www.twoeighteighty.com/uma_files/trustcert.der
http://www.twoeighteighty.com/uma_fi...obile_root.der

3. get e-screen unlock code here:

BlackBerry eScreen Unlock Code Generator (by Thyth)

Enjoy!

[Artemis68]

This is awesome! Thank you!

I am just curious, but how do you know its working? The UMA symbol appears?
I wasn't sure because the ATT 8900 doesn't support it.

Glad you got it working!

Posted from my CrackBerry at wapforums.crackberry.com

[czaplin]

I turned off network connection and used wi-fi. I could make calls and had UMA instead of EDGE so I guess it works!

[quailallstar]

This is GOLDEN! I'm doing this on my Bold when I have the time.

[quailallstar]

Doesn't work on the Bold Hardware does not support it. Oh well, at least I tried...

[czaplin]

Sorry to hear that, quailallstar. Anyway bold is a nice device

[quailallstar]

Thank you for posting up this info. It should help somone out there with 8900

Posted from my CrackBerry at wapforums.crackberry.com

[jamestbrewer]

Didnt realize att branded phones couldnt use UMA out the box. I wonder if flashing with a TMo OS would also do this

[czaplin]

Originally Posted by jamestbrewer

Didnt realize att branded phones couldnt use UMA out the box. I wonder if flashing with a TMo OS would also do this

That was the first thing (flashing tmo os) I tried to make UMA working, but without success. According to my knowledge after long research only the above instructions will help. It's sad none carrier but Tmo allows UMA calls on its network.

[berryite]

Originally Posted by czaplin

It's sad none carrier but Tmo allows UMA calls on its network.

Kinda makes you appreciate T-Mobile a little more huh?

[czaplin]

Originally Posted by berryite

Kinda makes you appreciate T-Mobile a little more huh?

Except for not greatest coverage everything else is fine. UMA was very useful in North Rim of Grand Canyon where (I guess) none carrier works and they had wi-fi in visiton center

[BlackBerry Brian]

UMA is the MAIN reason I am still with T-Mobile, followed by low pricing and great customer service.

But I have to say, if I could not do UMA, I would be forced to leave T-Mobile.

All of the places I am regularly at have only one or two bars of EDGE service, but I have Wi-Fi set up at all of them, just so I can use my phone.

If I have to go out of the city to ANY rural area, my phone switches to AT&T with SOS emergency calling only.

Luckily I'm usually with my business partner and he ALWAYS has service on his 8900 with AT&T, but it still makes me mad that I WAS able to roam on AT&T towers, but now I can't.

[berryite]

Originally Posted by BlackBerry Brian

Luckily I'm usually with my business partner and he ALWAYS has service on his 8900 with AT&T, but it still makes me mad that I WAS able to roam on AT&T towers, but now I can't.

Please tell us exactly where you live.

[BlackBerry Brian]

Originally Posted by berryite

Please tell us exactly where you live.

South Carolina, and don't try to tell me there is something wrong with one of my apps causing me to not be able to roam on AT&T towers please.

[berryite]

Originally Posted by BlackBerry Brian

South Carolina, and don't try to tell me there is something wrong with one of my apps causing me to not be able to roam on AT&T towers please.

You'd gain more credibility without the sarcasm and provocativeness.

Don't know much about the area other than the fact that the Carolinas are reported to be beautiful with a great quality of life.

Didn't T-Mobile recently buy some company there ... Suncom or something like that ... that they are upgrading and bringing into their network?