As we welcome the latest Apple iPhone, the iPhone 6 and companion iPhone watch, we take a look back at the evolution of the iPhone.

Apple reinvented itself and took smartphones forward 5 years with the original iPhone 2G eliminating most buttons, instead using a touch screen, with subsequent models adding front facing cameras, natural language voice control system called ‘Siri’ app, and the app store – now home to 1.2 million+ apps and more than 75 billion app downloads (as of June 2014).

Apple chief executive Steve Jobs unveils a new mobile phone that can also be used as a digital music player and a camera, a long-anticipated device dubbed an ‘iPhone.’ at the Macworld Conference 09 January 2007

The new Apple iPhone is displayed behind a glass enclosure at the Macworld Conference 09 January 2007 in San Francisco.

A model shows a 3G iPhone during its launch sale in Hong Kong on July 11, 2008.

Jobs delivered the first major makeover of the year-old iPhone, unveiling a faster, cheaper handset.

An Apple iPhone 3G S is displayed for a photograph in a Rogers Plus store in Toronto, Ontario, Canada, on Thursday, June 18, 2009.

Philip Schiller, senior vice president of marketing at Apple Inc., talks about the new voice control function of the Apple iPhone 3G S (3GS) during his keynote address on Monday, June 8, 2009.

Apple CEO Tim Cook speaks at the event introducing the new iPhone 4s at the company’s headquarters October 4, 2011.

Candles, flowers, and an iPhone with Steve Jobs photo displayed, are seen in remembrance of Steve Jobs, founder and former CEO of Apple Inc, outside the Apple Store at West 66th Street on October 5, 2011.

A man uses ‘Siri’ on the new iPhone 4S after being one of the first customers in the Apple store in Covent Garden on October 14, 2011.

The components of a smartphone sold as an Apple Inc. iPhone 4S are arranged around the company’s logo for a photograph in Hong Kong, China, on Saturday, Jan. 11, 2014.

Etsuko Ogiso, 77, uses her Apple Inc. iPhone 4S smartphone during a computer class in Tokyo, Japan, on Saturday, June 16, 2012.

Image was created using the iPhone 4s with Snapseed’s vintage filter. A man who calls himself the ‘One Man Band’ performs at the West Virginia State fair.

The “Angry Birds” mobile-phone game, designed by Rovio Mobile Oy is seen on an Apple Inc. iPhone 4 on Wednesday, Aug. 29, 2012.

Three months after Apple removed the popular Google Maps from its operating system to replace it with its own mapping software, a Google Maps app has been added to the iTunes store.

A woman walks past an advertisement for Apple’s new iPhone product in central London, 09 November 2007.

New Apple iPhone 5C smartphones await customers at the Berlin Apple Store on the first day of sales on September 20, 2013.

The iPhone 5C is seen on display at the Fifth Avenue Apple store on September 20, 2013.

Apple CEO Tim Cook uses an iPhone to take a picture of customers waiting in front of an Apple store to purchase the new iPhones on September 20, 2013.

Social media pps are seen on Apple iPhone 5s January 22, 2014.

Apple CEO Tim Cook announces the Apple Watch during an Apple special event on September 9, 2014.

Apple CEO Tim Cook shows off the new iPhone 6 and the Apple Watch on September 9, 2014.

Apple CEO Tim Cook speaks during an Apple special event on September 9, 2014.

Explore more from the evolution of the iPhone on Getty Images