i have SGS2 with 2.3.4 firmware and iPhone 4. recently i put iOS 5 beta 7 in my iPhone 4 and web browsing performance on the iPhone 4 is faster than my SGS2. im talking about load times on the same wifi network. sometimes the SGS2 faster, but most of the time, the iPhone 4 with the iOS5 is faster. like 80% of the time. talking about good quality software that apple makes without the need of beefy processor like the SGS2 had. anyone with iPhone 4 and iOS5 beta 7 and a SGS2 can prove it. if you have it, try it, i'm not lying and making things about this.