I had iPhone 3gs and just last week I changed this and purchase iPhone 4. But I found there are too many flaws in iPhone 4 and need long time to fix them. It's video quality is good but not so good signal.
What kind of flaws, vnb? I got mine last November, will never "upgrade" to a newer iOS because mine is ulta-stable as is, and haven't experienced any functional problems. Plz specify...