Compared to the previous 3G and 3GS, Apple iPhone 4 has made some changes in appearance, first is that iPhone 4 is less than 10mm thick compared with 12mm for its predecessor last year, the iPhone 3GS. The screen has roughly four times as much detail as before. There is also a front-facing camera, which could be used for videoconferencing, in addition to one on the back for pictures. Jobs called it “the biggest leap since the original iPhone”. It is worth mentioning that its metallic frame will be used to receive a variety of cell phone signal, and this design is unprecedented. In addition, so far, iPhone 4 is the thinnest smart phone, 24% thinner than 3GS, only 9.3mm.
Change 1: Screen Size
Screen size of Apple iPhone 4 is still 3.5 inches, and its screen resolution is up to 940 × 640 pixels, and the material is the same with iPad – IPS / FFS LCD screen display. Joker Slot
Change 2: Hardware
Apple iPhone 4 will use A4 processor which is the same with the iPad. And it includes a gyroscope and a faster processor similar to that in the iPad, speeds up to 1GHz, faster, and can efficiently support new system iOS 4.
Change 3: Endurance Capacity
iPhone 4 has a better endurance capability and offers longer battery life, Jobs said, and uses a ceramic case, giving it improved signal reception. It supports 7 hours 3G talk, 6 hours 3G Web browsing, 10 hours WIFI browsing, 10 hours video playback, 40 hours music playback, while standby time is up to 300 hours.
Change 4: 3-axis gyro
iPhone 4 will be build-in 3-axis gyroscope, which could work together with accelerator and compass, so, you could achieve 6-axis motion sensing. And it is perfect for game players.
Change 5: Megapixel Camera
Apple iPhone 4 has backside illuminated sense, and supports 5X digital zoom, tap to focus, LED Flash, etc.
Change 6: System
Apple iPhone 4 will use iPhone IOS 4, which contains a multi-tasking, integrated file folder, no classification of the message, and many other major upgrade.
Change 7: iBooks
Apple officially announced that iBooks is wireless to iPhone, iPad and iPod. And iPhone and iPad will share the same stacks, so, you could download the same book to all your devices for no extra charge. And users could read books using the unified account with your iPhone or iPad.