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This is the very first iPhone ever made.
Iphone
June 29, 2007
Apple
3.5 in diagonal screen;
320x480 pixels at 163 ppi;
2-megapixel camera -
Iphone 3G
Apple
July 11, 2008
Connects faster to 3G networks;
Built in GPS;
location services;
more storage -
Iphone 3GS
Apple
June 19, 2009
Twice as fast as the previous version;
less expensive -
Iphone 4
Apple
June 24, 2010
Face time video chat;
High resolution "Retina" screen;
640 x 960 pixels at 326 ppi -
Iphone 4S
Apple
Oct 14, 2011
New dual-core processor -
Iphone 5
Apple
Sept 21, 2012
Slimmer and faster;
4-inch diagonal screen;
640 x 1,136 pixels at 326 ppi -
Iphone 5S
Apple
Sept 20, 2013
Faster, 64 bit A7 SoC;
Touch ID;
new motion data processor -
Iphone 6
Apple
Sept 12, 2014
4.7 in screen;
Touch id security;
Supports apple pay;