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September 15, 2019

iPhone Docking Rig Made From LEGO Blocks


The iPhone allows audio conferencing, call holding, call merging, caller ID, and integration with other cellular network features and iPhone functions. For example, if music is playing when a call is received, the music fades out, and fades back in when the call has ended.

The proximity sensor shuts off the screen and touch-sensitive circuitry when the iPhone is brought close to the face, both to save battery and prevent unintentional touches. The iPhone does not support video calling or videoconferencing on versions prior to the fourth generation, as there is only one camera on the opposite side of the screen.

The iPhone 4 supports video calling using either the front or back camera over Wi-Fi, a feature Apple calls Face Time. The first two models only support voice dialing through third-party applications. Voice control, available only on the iPhone 3GS and iPhone 4, allows users to say a contact’s name or number and the iPhone will dial.


The iPhone includes a visual voicemail (in some countries) 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.

A music ringtone feature was introduced in the United States on September 5, 2007. Users can create custom ringtones from songs purchased from the iTunes Store for a small additional fee. The ringtones can be 3 to 30 seconds long from any part of a song, can fade in and out, pause from half a second to five seconds when looped, or loop continuously. All customizing can be done in iTunes, or alternatively with Apple’s Garage Band software 4.1.1 or later (available only on Mac OS X) or third-party tools.

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