How to switch iphones?

[cheddahchad]

So my iphone 3GS got a little water in it and the backlight burned out. My dad gave me his old iphone 3GS because I wanted to replace mine.

How would I go about switching it without losing my contacts, apps, and songs? Do I need to take it to the at&t store? Or do I just swap sim cards? Can someone please walk me through the process?

Thanks!

 

[Nermal]

Disclaimer: I haven't tried this myself.

But... it should be a matter of swapping SIMs, then restoring from your latest backup.