[1.1.2][H/W unlock]Antenna Cover after unlock

I would like to know about the wear/tear of opening the iphone for h/w unlock. is it possible not to leave any mark on the iphone as i'm going to resell it after h/w unlock. any kind of picture would be nice

thanks

Depends on how much skill you have and how much care you take. There's no way to guarantee no marks if you proceed. There are lots of pictures if you search.

a lot of posts say that iphone's fit and look will not be the same as an unlocked one.... even if you spent several hours in the process

The fit will almost certainly not be the same. Some part of the case has to be stressed to remove it. Greater care can result in less stress, but I think it's impossible to eliminate stress all together.