Apple iPhone/iPhone 3G (User manual) - Manual (Page 133)

Appendix A Troubleshooting 133
iTunes and Syncing
iPhone Doesn’t Appear in iTunes
The iPhone battery might need to be recharged. For information about charging 
iPhone, see “Charging the Battery” on page 32.
Disconnect other USB devices from your computer and connect iPhone to a

different USB 2.0 port on your computer (not on your keyboard).
Turn iPhone off and back on again. Press and hold the Sleep/Wake button on top of

iPhone for a few seconds until a red slider appears, then drag the slider. Then press
and hold the Sleep/Wake button until the Apple logo appears. Tap Unlock and enter
your SIM’s PIN if the SIM is locked.
Important: If you enter the PIN incorrectly three times, you may need to contact
your carrier for a Personal Unlocking Key (PUK) to enable your SIM card again.
Restart your computer and reconnect iPhone to your computer.

Download and install (or reinstall) the latest version of iTunes from 
www.apple.com/itunes.
Syncing Doesn’t Work
The iPhone battery might need to be recharged. For information about charging 
iPhone, see “Charging the Battery” on page 32.
Disconnect other USB devices from your computer and connect iPhone to a

different USB 2.0 port on your computer (not on your keyboard).
Turn iPhone off and back on again. Press and hold the Sleep/Wake button on top of

iPhone for a few seconds until a red slider appears, then drag the slider. Then press
and hold the Sleep/Wake button until the Apple logo appears. Tap Unlock and enter
your SIM’s PIN if the SIM is locked.
Important: If you enter the PIN incorrectly three times, you may need to contact
your carrier for a Personal Unlocking Key (PUK) to enable your SIM card again.
Restart your computer and reconnect iPhone to your computer.

Download and install (or reinstall) the latest version of iTunes from 
www.apple.com/itunes.
Contacts, Calendars, or Bookmarks Don’t Sync
Download and install (or reinstall) the latest version of iTunes from 
www.apple.com/itunes.