I had the iPhone 4 back in fall of 2011, had it for about a year and have iphone 5 now. It can out in fall of 2010 for AT&T, which means it approaching 3 years old. The a 3 is right over 2 years old and is also on the 4g lte network vs the iPhone 4 with a smaller screen in the 3 g network. It's a no brainer.