I have an iphone 3g on at&t. I just moved into an area with very little cellular service and it is becoming a nightmare.

Is there anything I can do to boost service? I have tried cell booster which didn't work.

People with blackberry's on at&t have no problem where I am.

If I unlocked my iphone 3g, will that help in getting a better signal?

Are there things I can adjust on the iphone to increase the signal?