Hey looking for some help. Currently using a blackberry with wifi. I use my blackberry a lot for emails. Have been looking lately at getting a itouch for in the gym and on flights and stuff but want to ask a few questions about the iphone. Can I unlock the iphone and use my existing orange sim and contract. If i unlock it do i lose any features. Can I pick up me gmail emails from it like on the blackberry. Can the phone be put into flight mode so it can still be used as a video/music player. Basically can it do what my blackberry does without changing my contract, or am i best just sticking to the blackberry and buying an itouch. Thanks.