An account with Apple's iTunes music service will be a requirement for setting up the iPhone.
This news comes from an email sent by Apple to all those who have signed up to be informed when this smartphone is available.
This isn't much of a surprise, as iTunes support is one of the primary features of the iPhone. But anyone considering buying this upcoming device should be aware that they must have an iTunes account in order to be able to use it.
The iTunes service will be necessary to allow this smartphone to be able to synchronize data with a calendar and contacts application. The iPhone will support iCal and Entourage on a Mac, and Outlook on Windows.

An Overview of the Apple iPhone
The iPhone will have either 4 GB or 8 GB of built-in storage, and it will support both music and video, which will be playable on its 3.5-inch, 320-by-480-pixel, 160 ppi display.
In addition, this will be a quad-band GSM/GPRS phone. It will include EDGE, but not UMTS/HSDPA. It will, however, have Wi-Fi b/g and Bluetooth 2.0.
The iPhone will run what Apple says is a version of OS X, the same operating system this company's desktop and laptop computers run. It will be able to run some -- but not all -- specially selected OS X applications, including the Safari web browser.
It will have a touchscreen, but not include a stylus. Instead, users will be expected to control it with their fingertips.
This smartphone is expected to sell for $500 (4 GB) or $600 (8 GB) when it debuts on June 29.
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