Apple iPhone 4 - Manual (Page 14)

http://www.apple.com/legal/sales_policies/.
1. General.
(a) The software (including Boot ROM code and other embedded
software), documentation, interfaces, content, fonts and any data that
came with your iOS Device (“Original iOS Software”), as may be updated
or replaced by feature enhancements, software updates or system restore
software provided by Apple (“iOS Software Updates”), whether in read
only memory, on any other media or in any other form (the Original iOS
Software and iOS Software Updates are collectively referred to as the
“iOS Software”) are licensed, not sold, to you by Apple Inc. (“Apple”) for
use only under the terms of this License. Apple and its licensors retain
ownership of the iOS Software itself and reserve all rights not expressly
granted to you.
(b) Apple, at its discretion, may make available future iOS Software
Updates for your iOS Device. The iOS Software Updates, if any, may not
necessarily include all existing software features or new features that
Apple releases for newer or other models of iOS Devices. The terms of
this License will govern any iOS Software Updates provided by Apple
that replace and/or supplement the Original iOS Software product,
unless such iOS Software Update is accompanied by a separate license in
which case the terms of that license will govern.
2. Permitted License Uses and Restrictions.
(a) Subject to the terms and conditions of this License, you are granted
a limited non-exclusive license to use the iOS Software on a single
Apple-branded iOS Device. Except as permitted in Section 2(b) below,
and unless as provided in a separate agreement between you and Apple,
this License does not allow the iOS Software to exist on more than one
Apple-branded iOS Device at a time, and you may not distribute or make
the iOS Software available over a network where it could be used by
multiple devices at the same time. This License does not grant you any
rights to use Apple proprietary interfaces and other intellectual property
in the design, development, manufacture, licensing or distribution of
third party devices and accessories, or third party software applications,
for use with iOS Devices. Some of those rights are available under
separate licenses from Apple. For more information on developing
third party devices and accessories for iOS Devices, please email
[email protected]. For more information on developing software
applications for iOS Devices, please email [email protected].
(b) Subject to the terms and conditions of this License, you are granted
a limited non-exclusive license to download iOS Software Updates that
may be made available by Apple for your model of the iOS Device to
update or restore the software on any such iOS Device that you own
or control. This License does not allow you to update or restore any
iOS Device that you do not control or own, and you may not distribute
or make the iOS Software Updates available over a network where
they could be used by multiple devices or multiple computers at the
same time. If you download an iOS Software Update to your computer,
you may make one copy of the iOS Software Updates stored on your
computer in machine-readable form for backup purposes only, provided
that the backup copy must include all copyright or other proprietary
notices contained on the original.