User guide

Appendix C Safety, Handling, & Support 149
If the interior temperature of iPhone exceeds normal operating temperatures (for example, in a
hot car or in direct sunlight for extended periods of time), you may experience the following as it
attempts to regulate its temperature:
•
iPhone stops charging.
•
The screen dims.
•
A temperature warning screen appears.
•
Some apps may close.
Important: You may not be able to use iPhone while the temperature warning screen is
displayed. If iPhone can’t regulate its internal temperature, it goes into deep sleep mode until
it cools. Move iPhone to a cooler location out of direct sunlight and wait a few minutes before
trying to use iPhone again.
For more information, go to support.apple.com/kb/HT2101.
iPhone Support site
Comprehensive support information is available online at www.apple.com/support/iphone.
To contact Apple for personalized support (not available in all areas), see
www.apple.com/support/contact.
Restarting or resetting iPhone
If something isn’t working right, try restarting iPhone, forcing an app to close, or resetting iPhone.
Restart iPhone: Hold down the Sleep/Wake button until the red slider appears. Slide your nger
across the slider to turn o iPhone. To turn iPhone back on, hold down the Sleep/Wake button
until the Apple logo appears.
Force an app to close: Hold down the Sleep/Wake button for a few seconds until a red slider
appears, then hold down the Home button until the app closes.
You can also remove an app from the recents list to force it to close. See Opening and switching
between apps on page 17.
If you can’t turn o iPhone or if the problem continues, you may need to reset iPhone. A reset
should be done only if turning iPhone o and on doesn’t resolve the problem.
Reset iPhone: Hold down the Sleep/Wake button and the Home button at the same time for
at least ten seconds, until the Apple logo appears.
“Wrong Passcode” or “iPhone is disabled” appears
If you forget your passcode or iPhone displays an alert that it is disabled, see “iOS: Wrong
passcode results in red disabled screen” at support.apple.com/kb/HT1212.
“This accessory is not supported by iPhone” appears
The accessory you attached may not work with iPhone. Make sure the USB cable and connectors
are free of debris, and refer to the documentation that came with the accessory.