iPhone 4, the world's thinnest smartphone at just 9.3 mm, is also one of the fattest in terms of features and functionality. The breakthrough technology in iPhone 4 is situated between two glossy panels of aluminosilicate glass - the same type of glass used in the windshields of helicopters and high speed trains. The glass is ultra-durable and more scratch resistant than ever. It's also recyclable.
With dimensions of 4.5 x 2.3 x 0.37 inches, the iPhone 4 is as tall as its predecessor the iPhone 3GS, but slightly thinner by 25 %. It comes with a 960-by-640 backlit LCD display that boasts a pixel density of 326 pixels per inch and is equipped with the power-efficient mobile Apple A4 processor and 512 MB of RAM. With such an armoury, the iPhone 4 can easily perform complex jobs such as multi-tasking, editing video, and placing FaceTime calls.
iPhone 4 includes a built-in three-axis gyroscope and 5 megapixel built-in cameras on both back and front sides that are perfect for making FaceTime calls and shooting self-portraits. The camera on the back is equipped with a built-in LED flash. The dual camera system is one of the distinguishing features of the new iPhone when compared to the previous version. To support FaceTime calls, iPhone 4 also has two microphones.
Another distinguishing feature is the retina display on iPhone 4 that is the sharpest, most vibrant, highest-resolution phone screen.
Based on iOS 4, iPhone 4 comes with a new way of multitasking. Users can switch between their favorite third-party apps instantly without slowing down the performance of the foreground app or draining the battery unnecessarily.
And the addition of home screen folders is another common feature of iPhone 4.
Another big change is the SIM card slot that is a Micro-SIM format, just like the iPad. According to Apple's Steve Jobs, the Micro-SIM format allows more space for the larger battery.
iPhone 4's display - called a Retina Display - features 940 x 640 pixels (326 pixels per square inch ) which is four times the resolution of previous iPhone models.Key Specs:
- OS: iOS 4
- Display: LED-backlit IPS TFT, capacitive touchscreen, 16M colors, 640 x 960 pixels, 3.5 inches
- Memory: 16/32 GB storage, 512 MB RAM
- Network: 3G HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps
- Connectivity: WiFi 802.11b/g/n
- Bluetooth: v2.1 with A2DP USB: 2.0
- Camera: Primary 5MP, 2592 x 1944 pixels, autofocus, LED flash
- Battery: Standard battery, Li-Po 1420 mAh up to 300h (3G), Talk time: up to 7h (3G), Music play: up to 40h
- Dimensions (mm): 115.2 x 58.6 x 9.3
- Weight: 137 g
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