I upgraded from the 3Gs to this phone around 3 months ago. I was very impressed with how seamlessly everything transferred from one phone to the other. I barely had to do anything and all my contacts, messages, pictures, music etc were transferred. Saying that - once the transfer was complete, it sort of felt like I still have the same phone, only now it's in a square case! It's a good phone, don't get me wrong, a little bit faster than the 3Gs except with a few new features thrown in, i.e. better camera. the "face time" feature is pretty good as you can take pictures of yourself more accurately. (especially good for Facebook profile pictures). Aside from that, it's pretty much the same as the 3Gs, just faster. The battery life is the same and it still drops calls like the 3Gs did. But overall its a good phone.