Along with the iPhone 3G, the first major software update to iOS, 2.0 was released which featured various new features and improvements over its predecessor most notably the App Store.

[edit]App Store

One of the main new features of iOS 2.0 is the App Store which allows users to install third party applications on their device. Preceding this, jailbreaking was the only way to install custom applications on the device. On the App Store's initial launch, 500 applications were available for download, and this amount has grown vastly since then. The software update was also issued to original iPhone and iPod touch users which also gave them access to the App Store although iPod touch owners were required to pay a fee to update to the new version.

A lot of other features were also given in iOS 2.0, making the iPhone 3G a full featured device at the time, having 3G data capabilities, 3rd party applications, and an updated OS that gave a lot of other software features, such as OS enhancements, ex