Hi there I've got an iPhone 4S for a while now, but recently an untethered Jailbreak came available. Something I would very much like doing, would be making my own interface for my iPhone. However, this would be my first time doing so, and I'm quite hesitant because I don't want my iPhone to have a buggy interface. So I was hoping there was some kind of software for Mac or Windows which could simulate an iPhone with iOS 5, so I can test things before putting it on my iPhone. Is there any software of such kind, and if not, anything else you could advice me? Thanks you very much! PS. I'm quite hesitant about jailbreaking my iPhone, because everything is working so nice, and I'm afraid it'll slow down or get buggy. Is there any thread or link that could help me decide?