User's Manual
Troubleshooting
137
Troubleshooting
Troubles hooting
Problem Possible causes and solutions
Cannot turn the
power on
• Ensure that the battery is inserted correctly (page 39).
• Ensure that the battery is charged (page 42).
Cannot charge the
battery
• Ensure that the battery is inserted correctly.
• Ensure that the AC adapter and battery pack connectors are clean.
Cannot make or
receive voice or
video calls
• Check the signal strength indicator. If the display indicates a poor signal, adjust
your physical location to be clear of obstructions that may block the signal.
• A video call can only be made or received in an area with 3G coverage. Ensure
that the icon indicating that you are in an area with 3G coverage is displayed.
• If you enter the PIN code incorrectly three times in a row, the PIN lock will be
set, preventing calls being made because access to the SIM card is blocked
(page 75). Enter the PUK code to cancel the PIN lock.
• If the indicator appears on the display, enter your security code to cancel the
phone lock.
Cannot use the
Internet
• Check your subscription status. Contact your service provider.
• The network settings may be incorrect. Check the network settings. For details
of network settings, contact your service provider.
Cannot use SMS or
MMS
• Check your subscription status. Contact your service provider.
• Ensure that the service centre number is correct. For details of the service
centre number, contact your service provider.
G910-G920_UM_EN.book Page 137 Friday, November 9, 2007 2:02 PM