User's Manual

Safety & Precaution 25
proximity sensor, and light sensor lenses)
• Use only the supplied or an approved replacement antenna.
Unauthorized antennas, modifications, or attachments could
damage the device and may violate regulations governing radio
devices.
• Use charges indoors.
• Always create a backup of data you want to keep (such as
contacts and calendar notes) before sending your device to a
service facility. All of the above suggestions apply equally to
your device, battery, charger, or any enhancement. If any device
is not working properly, take it to the nearest authorized service
facility for service.
Trouble Shooting
Your phone displays “Call not allowed” or “No
service.”
• When you are in an area with weak signals or poor reception,
you may lose reception. Move to another area and try again.
• You cannot access some options without a subscription.
Contact your service provider for more details.
You enter a number, but the call is not dialed.
• Ensure that you have pressed the Dial key.
• Ensure that you have accessed the right cellular network.
• Ensure that you have not set call barring for the phone number.
Another caller cannot reach you.
• Ensure that your phone is turned on.
• Ensure that you have accessed the right cellular network.
• Ensure that you have not set call barring for the phone number.
Another caller cannot hear you speaking.
• Ensure that you are not covering the built-in microphone.
• Ensure that the microphone is close to your mouth.
• If using a headset, ensure that it is properly connected.
The phone beeps and the battery icon flashes.
Your battery is low. Recharge or replace the battery to continue
using the phone.
The audio quality of the call is poor.
• Ensure that you are not blocking the phone’s internal antenna.
• When you are in an area with weak signals or poor reception,
you may lose reception. Move to another area and try again.