Google has come a long way with their smartphones — here's proof.
The blog GadgetLove created a GIF that follows the evolution of Google phones from the Nexus One to Nexus 5.

See also: The Complete Evolution of Apple's iOS in One GIF
The GIF mostly highlights Google's experimentation with home buttons throughout the years. The first iteration of the phone even employed a scroll ball that was later nixed. Eventually, Google abandoned all tactile buttons for touchscreen icons. The GIF also illustrates Google's continuing efforts to produce a cleaner, sleeker feel for their hardware.
Google unveiled their latest smartphone, the Nexus 5, last Thursday.
The 5-inch phone boasts a Snapdragon 8 processor, runs on the latest Android operating system, KitKat, and is only a third-of-an-inch thick and 4.59 oz. Plus, it has an HDR+ camera mode to avoid blurry pictures.
All in all, the phone proves to be a solid showing from Google, who only three years ago, debuted a much different phone.
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Image: Google