From iPhone to iPhone 6 Plus: The evolution of Apple's phone

[caption id="attachment_98500" align="alignleft" width="860"] Last night Apple held its annual Worldwide Developers Conference (WWDC) and continued its tradition of unveiling new products with the introduction of the iPhone 6 and iPhone 6 plus which are its biggest phones so far. Here's a look back at the various Apple product launches through the years.[/caption]

[caption id="attachment_98432" align="alignleft" width="860"] In January 2007 Apple announced the iPhone. The device featured one button on its smooth face and a virtual keyboard. Image: Reuters[/caption]

[caption id="attachment_98433" align="alignleft" width="860"] The following years saw the launches of the iPhones 3G, 3GS and 4, each a variant of its predecessor and each slightly slicker in design. The iPhone 4 incidentally also came in white.[/caption]

[caption id="attachment_98434" align="alignleft" width="860"] Apple watchers said the iPhone 4S was a minor follow-up to its previous model and featuring only incremental hardware upgrades. The iPhone 5 sported a 4-inch "retina" display, ability to surf onhigh-speed 4G LTE wireless networks, and was 20 percent lighter than the previous iPhone 4S. Image: Reuters[/caption]

[caption id="attachment_98435" align="alignleft" width="860"] The iPhone 5S and iPhone 5c had features like fingerprint recognition to unlock the phone. Reuters image[/caption]