Just wondering can I use my month old Sprint BB 8830 be used either with Tmobile and/or At&T without having any problem?

Nope, sorry.. Sprint 8830 is a CDMA device and TMo and AT&T are GSM. It's incompatible.

The sprint bb8830 works with both, cdma and gsm. And its actually unlocked. But I heard that this phone does not work with gsm providers in the usa because the gsm frequency in the usa is different to the rest of the world.

Well, as I know BB 8830 with Sprint is a hybrid world phone, a combination of CDMA and GSM. Please correct me if I am wrong.

You are correct but the GSM bands used on the 8830 are only used overseas, not in the US so the GSM portion won't work in the US.

Ok, I got that. Anybody has any second opinion on that? Also, is there any way to make the GSM works with other provider?

A second opinon? Yes, you cannot get the Sprint device to work on a GSM network in the US.

Third opinion - you can not use a Sprint 8830 on any North American GSM networks. As has been said, the GSM frequencies in the 8830 are for those outside of North America.

You CAN NOT get the GSM in an 8830 to work in North America.

That was funny --- So, I will probably ebay this device and will get a new one either with Tmobile or At&T. What about the status of BB 8800 with Tmobile? Any update?

That's probably the best idea.

Wirelessly posted (BB 8860: BlackBerry8100/4.2.1 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/100)

This was posted near the top too, so I guess that makes 4 opinions.