Apple CNETiPhone3G16GBBlack User Guide - Page 134

Phone and Voicemail

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Yahoo! Address Book Still Has Contacts Deleted From iPhone Yahoo! Address Book doesn't allow contacts containing a Messenger ID to be deleted through syncing. To delete a contact containing a Messenger ID, log in to your Yahoo! account online and delete the contact using Yahoo! Address Book. Phone and Voicemail Can't Make or Receive Calls  Check the cell signal icon in the status bar at the top of the screen. If there are no bars, or if it says "No service," try moving to a different location. If you're indoors, try going outdoors or moving closer to a window.  Check to make sure you're in an area with network coverage. Go to your carrier's website to see network coverage areas.  Make sure airplane mode isn't on. From the Home screen choose Settings, then turn airplane mode off. If that doesn't work, turn airplane mode on, wait 15 seconds, then turn airplane mode off again.  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.  There may be a problem with your wireless service. Call your carrier or go to your carrier's website.  Restore the iPhone software. See "Updating and Restoring iPhone Software" on page 140. Can't Make Calls Over Wi-Fi iPhone doesn't support calling over Wi-Fi. Visual Voicemail Is Not Available Visual Voicemail is delivered over the cellular data network or a Wi-Fi connection. Because Data Roaming is turned off by default, you may not have access to the Internet when traveling abroad unless you turn Data Roaming on or connect to a Wi-Fi network. To turn Data Roaming on, in Settings choose General > Network and tap Data Roaming. Data roaming charges may apply. Important: Data roaming charges may apply. To avoid data roaming charges, turn Data Roaming off. 134 Appendix A Troubleshooting

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Appendix A
Troubleshooting
134
Yahoo! Address Book Still Has Contacts Deleted From iPhone
Yahoo! Address Book doesn’t allow contacts containing a Messenger ID to be deleted
through syncing. To delete a contact containing a Messenger ID, log in to your Yahoo!
account online and delete the contact using Yahoo! Address Book.
Phone and Voicemail
Can’t Make or Receive Calls
Â
Check the cell signal
icon in the status bar at the top of the screen. If there are no
bars, or iF it says “No service,” try moving to a di±erent location. IF you’re indoors, try
going outdoors or moving closer to a window.
Â
Check to make sure you’re in an area with network coverage. Go to your carrier’s
website to see network coverage areas.
Â
Make sure airplane mode isn’t on. From the Home screen choose Settings, then turn
airplane mode o±. IF that doesn’t work, turn airplane mode on, wait 15 seconds, then
turn airplane mode o± again.
Â
Turn iPhone o± 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.
Â
There may be a problem with your wireless service. Call your carrier or go to your
carrier’s website.
Â
Restore the iPhone software. See “Updating and Restoring iPhone Software” on
page 140.
Can’t Make Calls Over Wi-Fi
iPhone doesn’t support calling over Wi-Fi.
Visual Voicemail Is Not Available
Visual Voicemail is delivered over the cellular data network or a Wi-Fi connection.
Because Data Roaming is turned o± by deFault, you may not have access to the
Internet when traveling abroad unless you turn Data Roaming on or connect to a Wi-Fi
network. To turn Data Roaming on, in Settings choose General > Network and tap Data
Roaming. Data roaming charges may apply.
Important:
Data roaming charges may apply. To avoid data roaming charges, turn Data
Roaming o±.