I had a BlackBerry, but a friend has given me an iPhone 4 for my birthday. Haven't given my BlackBerry away yet, as not sure whether I'm done with it yet. iPhone is much different, and have to get used to the touch screen. I do like the higher resolution in colours and its very slim and light weight design. Just seriously worried about all of the glass however, so may keep my BlackBerry for spare indefinitely, just in case the glass may crack.