There are 4 versions of the iPhone: iPhone, iPhone 3G, iPhone 3G and the iPhone 4.Version is equivalent to model, in other words 4 devices (hardware) different, do not confuse the version of the iPhone with the version of this operating system (software)
All Iphone Models Comparison
iPhone
The first iPhone has capacitive screen, speaker and headphone, microphone, 2 megapixel camera, headphone jack, EDGE connectivity and Wi-Fi. Can be recognized by its rear, which is divided into 2, the top color is aluminum, while thebottom is black plastic and contains the antenna, and Iphone works with Apple’s operating system iPhone OS (iOS 1)
iPhone 3G
Physically similar to the original iPhone. This model provides connectivity via 3G, as its name suggests, A-GPS and an entirely new housing curved glossy black plastic, in addition to the characteristics of the first iPhone.
iPhone 3GS
Physically the same as the iPhone 3G. The iPhone 3GS, gets its name from the wordspeed (velocity), since it is up to two times faster than the iPhone 3G. Incorporatingvideo recording, compass and 3 megapixel camera with autofocus and white balance,voice commands, and a longer duration of battery.20 Other new features such as voice recording, copy, paste and cut, among other Are not exclusive to the iPhone 3GS but the iPhone OS 3.1, which is also available for earlier models.
iPhone 4
Input the first major difference between this version of the phone is its design. Both thefront and rear are made of aluminum silicate glass addition to a stainless steel framewhich also functions as an antenna. The iPhone is thinner 4 now with 9.3 mm thick. Thedisplay also features improvements. Its size is 3.5 inches with 960 × 640 pixels. Calledby them ”Retinal Display “, has twice the resolution as the iPhone 3G and 326 pixelsper inch, has 78% of the pixels of the iPad. As expected, the iPhone 4 now has twocameras, one front and one rear video calls with a quality 5 megapixel camera andLED photo flash. Now you can record 720p HD video and autofocus function is alreadyenabled for video. As expected the iPhone 4 left the factory with the operating system,renamed iOS4 (a name more consistent since the iPod Touch and the iPad make use of it), and in addition to the features that had already been announced operating system The new resolution gives better quality automatically to text and buttons, and developers can make their applications compatible with this new resolution. iMoviehas been present in order to edit HD videos taken directly to the phone.
Together with the other phone sensors, a gyroscope has been included which will helpto have more precision in games designed for the iPhone 4 providing in conjunction with the accelerometer, a better analysis of 6-axis (up, down, left, right, front and back).
The ‘encore’ presentation was the video call function between iPhones 4, named’FaceTime’ and available for now only via WiFi, works without any configuration andmay make use of both houses of the iPhone. And finally the form of Microsoft, Bing,was added to the search engines to increase your options of three (Bing, Google andYahoo).
The latest news about the new product from the Cupertino company pointed to a possible bug related to the antenna produced by the short circuit between the antennasignal responsible for Bluetooth, Wi-Fi and GPS signal responsible for UMTS andGSM. The iPhone 4 with version 4.0 of its operating system, represented in the bar chart coverage declined markedly and the cutting of the call in case you are doing it.
Apple has recognized that some of their phones have problems with coveragedepending on how you hold the phone in areas of low coverage and offered to theSeptember 30 charge to all owners of an iPhone a protective case in April. Programcovers for the iPhone 4
With version 4.0.2, the phone from the beginning shows the actual coverage, so tocover the antenna, the signal decrease is much smaller, also appears not to be cutcalls. This event occurs in areas of low 3G coverage with any phone that has it.
