I'm basically looking for a mobile phone which has nothing but a small form factor as 2nd phone to accompany my iPhone. I understand that I won't get a phone which can just make calls, but the stress is on small. I am not really into mobile phones, so I'd be glad to get some recommendations in which direction to look. I already have an V3 over which I still punish myself for buying it and a K800i which is way too fat.
I saw some very sweet and flat Samsungs (I guess), but have no real clue which they were.
Any hints?