Is anyone konw where I can buy a BlackBerry 8700g Phone without plan and simlock ? I need use it in Poland.

Buy it from the service provider you'll use there!
Here's the link for European providers:
http://www.blackberry.com/uk/purchasing/index.shtml

He said he wants to buy an unlocked BB. I would look at the BUY/SELL/TRADE section of this forum http://www.blackberryforums.com/buy-sell-trade/ or check Ebay.

You're right, and I should have clarified why I gave that answer.

You can unlock any BB, however, if you purchase one someplace else and have problems with it, the provider can just say, hey - it's because it's not our device - regardless of whether or not it has any relevance!

I don't know if it's true any more, but as late as last year, t-Mobile and Cingular used different carrier frequencies. If you unlocked a t-Mobile device, it would work on Cingular, but mostly because of the old, being phased out AT&T infrastructure.

Why bother to take the chance that something unexpected would leave you dead in the water?

seeing as how the 8700 is a quad band phone it will work on any frequency of gsm. which means that no matter what type of sim card you put in an unlocked 8700 it will work on any gsm tower that the sim will connect to. this is the reason for unlocking a phone. the only time you run into problems concerning frequency is when you are trying to use a dual/tri band phone on the one or two frequencies that the phone itself does not work. as for as the provisioning of the phone goes there may be some programing that needs to be changed in order to make the phone work properly. in my experience most carriers will help yuo setup the phone because they make money off you using the phone wether you bought the equipment from them or not.

JerryD - you missed the boat when you started talking about frequencies... Rebeldevil is correct.

First, I did say that was over a year ago.

Second, I still stand by my FIRST statement. Go to the provider if you don't want unforeseen problems that they won't support because you got some device that's not theirs.

Better yet, ask yourself the question, are you so confident in your answer that you'd pay whatever it cost to rectify the problem when your answer doesn't work?

It's not like I have any vested interest other than to try to assist and I don't get how either of the postings assist with the question at hand.

I've been doing support professionally for over 15 years, and working with personal computers and the like for over 25 years, so I think I have a bit of a base for what I said.

At the end of the day, it's not our problem anyway!

Thanks for the bio. We unlock BBs and use them on many carriers. If they break we replace them. Rarely do we have a problem with a BB during the warranty period, so it doesn't matter. In a perfect world, all BBs would be unlocked and it wouldn;t matter. But it does.

Your analysis of GSM frequencies was off. Don't take the conversation elsewhere. If MAKA wants to get an 8700 unlocked, that is his decision.

If you unlock a T-Mobile 8700, why would it have any trouble at all on a Cingular network? If you're in an area where Cingular's using 850Mhz or 1900Mhz, it doesn't matter because the 8700 is a quad band phone and can use those two bands along with 900Mhz and 1800Mhz.