i have a tmobile 7105t unlocked running at&t sim. I have the blackberry package how can i set up this phone to connect to the internet. Right now it says data connection refused. Can someone please help me out. Also i have it unlocked does anyone know if i upgrade the software in will it relock the sim

Data Connection Refused means there is no connection to the RIM data servers. This requires a specific Blackberry data plan. Contact AT&T to have this plan added to your account.

thank you very much i appreeicate it

and once unlocked you can never lock it again, even if you want to...

so i can run my software update on my phone and it will stay unlocked huh? the place i had it unlocked from said i would have to pay again to unlock the phone if i updated the software.

They were wrong. You can never lock your device again, no matter what you do.

ok thank you i will update my software then

I have a 7100g and it is currently locked under AT&T. I called AT&T to obtain the unlock code to transfer to TMobile. I was told that they could not give me that number and referred me to Research In Motion. I contacted Rim and was told that I could only get the code from the service provider. Is there any other ways to unlock the phone or to get the code?

Several ways. One of which is:
GSM PhoneSource - When Only The Best Will Do

Thanks for the information...this really helps!

I attempted to unlock my 7100g bb, however I am not sure that it has worked.

I believed that it may of worked, because it is reading: No Valid Sim when I go under Sim Card, it use to have a ID# and the phone # there. I am no specialist in this area.

Can you confirm if I have successfully unlocked the phone?

Thanks

Here you go Urbank!

How do I determine if my BlackBerry is "unlocked"? - BlackBerryFAQ.com

E-

It appears that I failed to unlocked the code...still active on the network. However I have disabled the sim card ID# & telephone #, do I repeat the same steps over again to disable the network? Alhough, it's reading no sim card info and cell #, is there a way to end this nighmare?

Thanks for your responses, they have been very helpful.