iPhone 3G
Apple upgraded the original iPhone in 2008 with a complete redesign and support for 3G networks finally allowing users to download files and surf the web faster.

iPhone 3GS
The iPhone 3GS, launched in 2009, had an S for “speed.” It featured a faster processor than its predecessor and was able to cruise on even faster 3G networks that were beginning to approach 4G speeds.

iPhone 4
The iPhone 4, launched in 2010, introduced yet another redesign, this time with a glass body. It’s…