IPhone OS 2

iPhone OS 2 is the second version of iPhone OS (iOS), which was released on 11 July 2008. It was announced on 9 June 2008 at WWDC. It is the first version of iOS to support the ability to download 3rd-party applications via the App Store.

App Store
The App Store has been added, which allows for 3rd party applications to be installed.

Camera and Photos

 * Photos can now be saved from Mail and Safari.
 * Photos taken in the Camera app are now geotagged.
 * The ability to take screenshots has been added.
 * SVG image support has been added.

Mail

 * Added support for:
 * BCC
 * Microsoft Exchange accounts
 * Microsoft Office and iWork attachments
 * Multiple emails can now be deleted at once.
 * The ability to select an outgoing email has been added.

Calendar
The Calendar app now supports multiple calendars.

Contacts

 * Contacts can now be imported from a SIM card.
 * The search functionality has been improved.

Maps
iPhone OS 2.2 adds support for Google Street View, as well as the ability to display the address of a dropped pin.

Calculator
A scientific calculator mode has been added, which can be accessed by rotating the device into landscape mode.

Language and input

 * Added support for Norwegian, Swedish, Danish, Finnish, Polish, Dutch, Korean, Brazilian, and Portuguese languages.
 * iPhone OS 2.2 adds Emoji support.

Connectivity

 * Wi-Fi can now be enabled while in Airplane Mode.
 * WPA2 and 802.1X support has been added.