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Problem
Possible causes
Possible solution
You are too far away
from a base station for
your service provider.
You can request a
service area map from
your service provider.
Echo or
noise
Poor network trunk
quality on the part of
your service provider.
To end the call and dial
again. You may be
switched to a
better-quality network
trunk or device line.
Unable to
select certain
features
Your service provider
does not support
these features, or you
have not applied for
services that provide
these features.
Contact your service
provider.
Battery not
charge
The battery or battery
charger is damaged.
Contact the dealer.
The device
’s
temperature is below
0°C or higher than
45 °C.
Adjust the battery
charging environment
to avoid extremes of
temperature.
Poor contact between
the battery and
Check all connectors
to make sure all
