If you walk down the street today, almost everyone is carrying an iPhone. This year marks the 10th year of the iPhone’s existence, and in honor of this incredibly popular piece of tech, here’s how it has changed over the years:

2007

Following months and months of rumors and speculation, Steve Jobs unveiled the very first iPhone in January of 2007. This model came with a 3.5-inch screen, a 2-megapixel camera, and it came with a slew of new, multi-touch features. Ironically, critics claimed the phone, which started at $499, was too expensive to do well in the market.

2008

The iPhone 3G came out a year following the introduction of the first iPhone. This model could quickly connect to 3G-based networks and came with more storage and a built-in GPS. The 8GB model started out at $199 and the 16GB version started at $299.

2009

In 2009, Apple introduced the 3GS iPhone to the world. Although no major changes were incorporated compared with the previous version, this model was twice as fast and ran an early version of IOS 8 — iPhone 3.0.

2010

The iPhone 4 came out at the same time as the new IOS 4, and it also marked the first time the phone came with FaceTime video chat. It also marked the arrival of the first high-resolution “Retina” screen.

2011

Just after Steve Jobs stepped down as CEO from Apple because of health issues, the company introduced the iPhone 4S. The major change to the iPhone this year was that it came with a dual-core processor, which was the same one used in the iPad 2 at the time.

2012

The iPhone 5 was the first one to have a 4-inch screen, and this model came with the ability to run faster and had a much slimmer look than previous versions. At a presentation in San Francisco, Tim Cook said this was the biggest thing to happen to the iPhone yet.

2013

This was the first time iPhone rolled out two new iPhones in the same year — the upscale iPhone 5S and the iPhone 5C. This iPhone came with a 64-bit A7 SoC system, touch ID, and a new motion data sensor in the wake of the popularity of health and fitness apps.

2014

The second year in a row, iPhone came out with two iPhones — the iPhone 6 and iPhone 6 Plus. Both of the phones came with upgraded cameras that were ready for access to the Apple Pay network, and both were much more efficient and faster than the iPhone 5.

2015

This year, the iPhone 6 and iPhone 6 Plus both got upgrades. Both phones came with new force touch technology called 3D touch and a 12-megapixel iSight camera that could shoot 4K video. Each of the phones ran on a faster A9 chip and were available in rose gold.

2016

Both the iPhone 7 and iPhone 7 Plus looked much like the 2015 models. However, both the phones came with three major changes: an eliminated audio jack, a dual-camera setup, and a haptic-based virtual button to replace the home button.