Apple claims that the iPhone 4 smart phone brings the biggest changes to the iPhone since iPhone. iPhone 4 display has four time pixels as before. It is called retina display with the highest resolution display ever built on a phone. It also uses LED Back light for more brightness and clarity.
The iPhone 4 smart phone also supports video call using facetime or skype, with both can switch between the front and the rear camera. This is achieved with the powerful processor designed by Apple.
The 5 Megapixels camera with LED flash on the iPhone 4 allows us to capture photo and record HD video. iPhone 4 can also edit video with iMovie. The smaller chip on iPhone gives more room for a larger battery and at the end, the longer, up to 40 percent, talk time.
Another interesting feature is the multi-tasking capability. One can easily switch between one application to another without closing it.
