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| Apple iPhone 4 |
The Apple iPhone 4 is the next-generation iPhone which releases June 24th 2010. The major upgrades from the iPhone 3GS are the changed form factor (thinner design), 4x higher resolution, front facing camera for video chat, and upgraded camera system with 5MP photos, and HD recording.
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Apple touts the largest upgrade with the new video chat features, however there are currently severe limitations to the service that they are calling "FaceTime". Most notably, video chat only works between iPhone 4 devices, and it requires a WiFi connection. Its new processor is an ARM Cortex A8 (ARMv7 ISA) that was developed by Intrinsity and Samsung in 2009, and is either known as the Samsung S5PC110 "Hummingbird" or the Apple A4 (the only difference being the integrated PowerVR hardware graphics accelerator by Imagination Technologies). This line of processors is used in the Apple iPad, Samsung Galaxy S series phones, and Samsung Galaxy Tab.
Other upgrades place the iPhone 4 among the best in class in the smartphone category. The display is the highest resolution available on any smartphone (as of June 2010), it is one of the only phones that can do HD video recording of 720p at 30FPS, and the added gyrosensor gives the software total awareness of the phone's spatial orientation. Among all of these improvements Apple has also been able to reduce the size of the phone compared to the 3GS and increase the battery life by 40%.
Features
- 9.33mm thick - 24% thinner than iPhone 3GS
- the band that forms the structure of the phone is also the antenna
- Cortex A8 based ARM processor (Apple A4 / Samsung Hummingbird)
- Dual mic noise suppression
- 802.11n WiFi
- Improved 6-axis motion sensing with the addition of a gyrosensor
- Hardware features
- front facing camera
- micro SIM
- camera and LED flash on the back
- mute, volume up, volume down on the side
- headset, 2nd mic for noise cancelling, and sleep wake button
- Improved display
- 3.5 inch display
- Retina display - 4x the density of pixels - 326 pixels per inch
- 960x640 display
- 800:1 contrast ratio
- IPS technology (same as iPad)
- Improved battery over 3GS
- 7 hours of 3G talk
- 6 hours of 3G browsing
- 10 hours of WiFi browsing
- 10 hours of video
- 40 hours of music
- Quad-band HSDPA/HSUPA
- 7.2Mbps down
- 5.8 Mbps up
- Improved camera system
- 5MP (up from 3MP)
- 5x digital zoom
- tap to focus
- LED flash
- backside illuminated sensor
- records video at 720p at 30fps
- FaceTime (video chat)
- iPhone 4 to iPhone 4
- WiFi only
- Models
- 16GB for $199 (subsidized with AT&T 2-year contract)
- 32GB for $299 (subsidized with AT&T 2-year contract)
- both available in white and black
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