[mark_davis]

I have a AT&T 8100 and I need to unlock it. I have the unlock code provided from AT&T. In the instruction on In putting a Unlock code it says in step one to put in the SIM Card.
Can any one tell me if I need to put in the AT&T SIM Card or can I put in my new T-Mobile SIM Card
Thanks for your help.
Mark.

[sstroud]

if you put in the TMob SIM it should ask for the code and you can enter it then.

[mark_davis]

OK, I'll try that. I just didn't want to put in the new T-Mobile SIM and corrupt it if I was suppose to put in the AT&T SIM for Unlocking purposes.

[mark_davis]

That worked Great! I'm on T-Mobile now with a AT&T 8100.

[sstroud]

glad to see it worked for you. i was just about to post that you can unlock it with the AT&T SIM by following these directions

How do I unlock my BlackBerry? - BlackBerryFAQ

[mark_davis]

sstroud, I guess I should be more specific. I called AT&T and they gave me the unlock code over the phone right then. Later on I put the T-Mobile SIM in. When I turned it on, it didn't ask me to put in any code, but it did take a while for it to boot up. I then followed the instructions you posted a link to.
After restarting the Pearl, it detected the T-Mobile network and all was good.
I try to do as much searching first before I make a post, I just wasn't sure about what SIM I should use.
Because of this forum and all the wealth of information it provides up front, I'm able to take care of 95% of what ever questions or problems I might have.

[NJBlackBerry]

Clarifying - if you put in another carrier's SIM card into a locked BlackBerry it will not ask you for the unlock code. You *must* use the process outlined on BlackBerry FAQ - BlackBerryFAQ

[mark_davis]

Yes, that is exactly what happened.
NJBlackberry, just to ask, when I turn on the Pearl, it still flashes the AT&T logo Screen before the OS starts. Is there anyway to remove that? I don't know if it is in the Firmware or stuck somewhere in the OS. I did upgrade the OS to 4.5.0.81 Platform 2.7.0.78.

[NJBlackBerry]

It's in the firmware and can't be changed.

[mark_davis]

Thanks NJBlackberry for the quick reply. Now I know not to wast any more time on that.

[Tremo]

I use my Pearl quite a bit on international travel. I called ATT customer service and explained the situation and they gave me the unlock code. I unlocked the phone and now when I go overseas I just stop by a local phone kiosk in the arrival airport after clearing customs and buy a prepaid plan SIM and slap it it. I then have a local phone number to use during the visit. When I return to the USA, I throw the ATT SIM back in. My last experience with this was on a trip to Oz 3 weeks ago, I bought a Telstra SIM there at the Sydney airport and it worked like a champ. Since it's company paid travel, I turn in the foreign SIM with my expense report.

[prasad3223]

is there any way to unlock 8110 without codes?

[NJBlackBerry]

Nope. Sorry.