I upgraded my 3G to iOS 4 and have a couple of questions: (1) There are supposedly new features in the Photos app, including different ways to sort and view your photos. I don't see any differences. I have a ton of photos in my "Camera Roll," but I do not sync with any desktop programs or folders. Is this why I don't see any difference in my Photos app, or am I missing something? (2) I know that Game Center isn't being incorporated until end of summer, but many people claim to have the icon. I do not have a Game Center icon. Did it not install properly, or is this normal? (3) Now that we can have more than 1 Exchange account, I deleted my Gmail IMAP account and added it through Exchange so that I could use Push. However, now my "labels" do not appear as folders on the iPhone, precluding me from labeling emails on my iPhone. Is this only available through IMAP, or did I miss a setting somewhere? Anybody know? Thanks in advance.