User's Manual

172 Appendix
Troubleshooting
Problem Possible Causes and Remedies
Cannot turn the power on. • Make sure the battery pack is inserted correctly (page 26).
• Make sure the battery is charged (page 27).
Cannot charge the battery. • Make sure the battery pack is inserted correctly (page 26).
• Make sure the connectors or contacts of the AC adapter and battery pack are not dirty (page 27).
Cannot make or receive
voice and video calls.
• If the indicator appears on the display, move to a location where a signal can reach your phone or that is in the
service area.
• If the indicator appears on the display, cancel flight mode (page 138).
• A video call can only be made or received in an area with 3G coverage. Make sure the or indicator for
indicating you are in an area with 3G coverage appears on the display in standby mode.
• If a PIN code is incorrectly entered three times in a row, the PIN lock is set and a call cannot be made because
access to the SIM card is blocked. Enter the PUK code to cancel the PIN lock (page 24).
• If the indicator appears on the display, enter your security code (page 24) to cancel the phone lock ( page xx ).
• Make sure your phone is not set to reject calls (page xx) or divert calls (page 37).
Cannot use the Web. • If the indicator appears on the display, cancel flight mode (page 138).
• Check your subscription status. Contact your service provider.
• The network settings may be incorrect. Check the network settings (page xx). For details on the network settings,
contact your service provider.
Cannot use SMS and MMS. • If the indicator appears on the display, cancel flight mode (page 138).
• If the indicator appears on the display, delete messages no longer required (page 96).
• Check your subscription status. Contact your service provider.
• Make sure the service centre number (page 100) is correct. For details on the service centre number, contact your
service provider.