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Tuesday, October 25, 2011

A Brief Overview Of iPhone's Past And Present

By Michelle Smith


The iPhone is the general title of a line of cell phones that sport many media features, produced and offered by Apple. The very first iPhone was made available back in 2007 under the eponymous title, and was followed by additional releases of advanced versions: iPhone 3G, iPhone 3GS, iPhone 4 and the most recent phone added to the series, iPhone 4S.

Upon launch, Apple's iPhone had a significant impact on smartphone design with its new user interface that was a part of a system which eliminated the need for a traditional keyboard and freed space for a wider screen with multimedia purposes. The virtual keyboard and the use of only five physical buttons have become a design element common to all models in the series and one of the most widely recognized features of the iPhone.

The display comes with multi-touch technology and employs a 3.5 inch, blemish resistive glass screen which has been regularly developed from the 320 x 480 resolution of the initial generations to 640 x 960 and 326 ppi for iPhone 4 and iPhone 4S. The display screen isin contact with a proximity sensing unit which stops random input while chatting over the mobile phone whereas an ambient light sensing unit will promptly regulate levels of brightness.

iPhone additionally uses an accelerometer for pinpointing the location of the smartphone and allowing for programs to vary between portrait and landscape appropriately or work out spacial motion and velocity. A gyroscopic sensing unit has additionally been integrated commencing with the iPhone 4.

Although the original device was a GSM, ensuing versions have acquired 3G features and worldwide phone features, which allow one particular phone to work on networks founded on both GSM/UMTS and CDMA technologies.

GPS capabilities, better photo cameras, additional VGA camera for video recording or video calls, digital compass, and noise cancellation features have been added through newer models. iPhone 4S incorporates a natural language voice control system called Siri which allows user-device interaction through the use of voice, including voice-to-text dictation and accessing phone functions.

iPhone may also be utilized as a media player, permitting consistent playback both for mp3s as well as wide screen viewing of photographs or video data. Web surfing may be carried out via the built in Safari web browser that is included with the exclusive operating system known as iOS and incorporates Wi-Fi , EDGE or GSM networks, 2G, UMTS as well as HSDPA technologies according to the phone model.




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