Other users complained of their phone crashing after downloading applications from the App Store but Apple says that it should no longer be a problem as the update will make the App Store more reliable and installations of the apps quicker.
IW adds that "users with the updated firmware should have a reduced time backing up the handset before syncing with iTunes. Additionally, contacts and searches should load quicker, and the virtual QWERTY keyboard is supposed to be much more responsive."
Apple also added that email reliability and speed would be enhanced, most notably with POP accounts. Security got a slight upgrade giving users the option to have their sensitive data wiped after 10 consecutive failed password attempts.
The update also brings the "Genius" playlist to the iPhone which automatically creates playlists based on the song you are playing at the time. It will not create music based on the iTunes store however, just on the music you have on the handset.