my Nokia 5500D works some places and not others

Okay, my girlfriend lives in Finland and she sent me this Nokia 5500 Sport phone and it works fine here in Pittsburgh, but as soon as I get in more remote areas it doesn't work. My Motorola works fine in the remote areas that I call from on a daily basis. Is there anything that can be done? I stopped by Cingular/ATT and they said the phone must not work on some towers that are shared or borrowed from partner networks.

Any thoughts on this? I lost my Motorola Sliver today and have to use the Nokia. I may have to suck it up and buy yet another phone.

Ideas?

Thanks,
Curtis

Using the 5500 on at&t could be the problem. You're using a phone that supports frequencies of 900/1800/1900Mhz, while at&t uses 850/1900Mhz. More than likely 850Mhz is predominantly used in your area. The Nokia 5500 was designed to be used primarily in Asia/Europe. The reason why you got excellent reception with the SLVR is because it's a quadband phone (850/900/1800/1900). If reception is really bad when using your 5500, you might want to consider selling it and buy a phone that supports 850/1900Mhz

Wow what a shame. Expensive phone. I should send it back I guess. To bad, it has a killer camera and is really nicer than anything I have seen here in the states.

Thanks for the information.