However, at Macworld 2009, Apple issued a software update which automatically allowed 3G and EDGE users to access the store's full functionality for files smaller than 10 megabytes (MB).The i OS 3.0 update added the ability to download movies, TV shows, audiobooks, i Tunes U, and ringtones on mobile devices, in addition to the previously available songs and podcasts.As of 2017, i Tunes Store offers more than 43 million songs, including exclusive tracks from numerous artists.
In addition, i Tunes Store offers apps, which are applications used for various purposes (games, productivity, news, etc.) that are compatible with the i Pod Touch, i Phone, and i Pad, although some apps are specifically for the i Phone or i Pad only.
Music in the store is in the Advanced Audio Coding (AAC) format, which is the MPEG-4-specified successor to MP3.
Originally, songs were only available with DRM and were encoded at 128 kbit/s.
i Tunes Store allows users to purchase and download items directly to portable Apple devices, such as the i Phone, i Pad, Apple TV and i Pod Touch.
Originally, mobile users had to be connected to a Wi-Fi network in order to enter the store, hence its original name: i Tunes Wi-Fi Music Store.