Switching from iPhone 4 to iPhone 3G?

I have an iPhone 4 that broke, and I have my moms old iPhone 3G, if I go into an AT&T store will they switch it for me? Also, will I lose all my pictures and such or will they transfer them for me?

AT&T should switch it for you. You can transfer your pictures on your own. Just backup the iPhone 4 to iTunes and restore the backup on the iPhone 3G. Or copy them to a computer.

That happened to me too. I'm pretty sure they would switch it for you, but it wouldn't be free. I'm positive that they can transfer all the pictures, you just need to ask.
Hope it helps.