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Iphone Belt Clip

The iPhone allows audio conferencing, call holding, call merging, caller ID, and integration with other cellular network features and iPhone functions. Voice dialing and video calling are not supported by the iPhone.

The iPhone includes a visual voicemail feature allowing users to view a list of current voicemail messages on-screen without having to call into their voicemail. Unlike most other systems, messages can be listened to and deleted in a non-chronological order by choosing any message from an on-screen list. AT&T, O2, T-Mobile Germany, and Orange modified their voicemail infrastructure to accommodate this new feature designed by Apple. A lawsuit has been filed against Apple and AT&T by Klausner Technologies Inc. claiming the iPhone's visual voicemail feature infringes two patents.

A music ringtone feature was introduced in the United States on September 5, 2007. For a fee equal to the price of the song on iTunes, the user is allowed to create their custom ringtones. It is not yet available in all countries where the iPhone has been released. The ringtones can be from 3 to 30 seconds in length of any part of a song, can include fading in and out, can pause from half a second to five seconds when looped, and never expire. All customizing can be done in iTunes, and the synced ringtones can also be used for alarms on the iPhone. Custom ringtones can also be created using Apple's GarageBand software 4.1.1 or later (available only on Mac OS X) and third-party tools.