The iPhone is a line of smartphones designed by Apple Inc. It runs
Apple's iOS mobile operating system. The first generation iPhone was
released on June 29, 2007; the most recent iPhones, the
seventh-generation iPhone 5C & iPhone 5S, were introduced on
September 10, 2013.
The user interface is built around
the device's multi-touch screen, including a virtual keyboard.The iPhone
has Wi-Fi & cellular connectivity such as 2G, 3G, 4G <E. An
iPhone can shoot video, take photos, play music, send & receive
email, browse the web, send texts, & receive visual voice mail.
Other functions are video games, reference works, GPS navigation, social
networking, & etc.
There are seven generations of iPhone models, each accompanied by one of the six major releases of IOS.
iPhone release dates- 1st gen: June 29, 2007
3G: July 11, 2008
3GS: June 19, 2009
4: June 24, 2010
4S: October 14, 2011
5: September 21, 2012
5C and 5S: September 20, 2013
Memory - 1st gen and 3G: 128 MB LPDDR DRAM ( 137 MHz)
3GS: 256 MB LPDDR2 DRAM (200 MHZ)
4: 512 MB LADDR2 DRAM (200 MHz)
4S: 512 MB LPDDR2 DRAM
5: 1 GB LPDDR2 DRAM
5S: 1GB LPDDR3 DRAM
Weight - 1st gen & 3GS: 135g (4.8 oz)
3G: 133g ( 4.7 oz)
4: 137g (4.8 oz)
4S: 140g (4.9 oz)
5: 112g (4.0 0z)
The
resounding sales of the iPhone have been credited with reshaping the
smartphone industry & helping make Apple one of the world's most
valuable publicly traded companies in 2011 to 2012. The iPhone is the
top selling phone of any kind in some countries, including the United
States & Japan.
Some online services also in iPhone such as iTunes Store, App Store, iCloud, iBooks, Passbook
If you want more details about iPhone, please visit- www.apple.com/iPhone