ZTE Corporation E821 ユーザーズマニュアル
E821 User Manual
38
C h a p t e r
13
Questions and Answers
Got a problem with your phone? Then see if the solution is below.
And if that doesn’t help, please
contact your service provider.
problem
possible cause
possible solution
Poor reception
The network signal is too weak
where you are. For example, you
are in a basement or near a tall
building, and the signal is finding it
hard to get through.
where you are. For example, you
are in a basement or near a tall
building, and the signal is finding it
hard to get through.
Move to a location where the
network signal can be easily
received.
network signal can be easily
received.
The network is busy. This can
happen during peak times when
everyone is trying to make calls.
happen during peak times when
everyone is trying to make calls.
Try again after waiting a little
while.
while.
You are too far away from a
network base station to get a
good signal.
network base station to get a
good signal.
Request a service area map from
the service provider to see where
reception is best.
the service provider to see where
reception is best.
Echo or noise
Poor network quality.
Press end key and dial again.
You may be switched to a
better-quality network.
You may be switched to a
better-quality network.
Unable to select certain features.
The service provider does not
support these features, or you
have not applied for services that
provide these features.
support these features, or you
have not applied for services that
provide these features.
Contact the service provider.
Battery will not charge.
The battery or battery charger is
damaged.
damaged.
Get a new one. (You might have
to buy a replacement if your
warranty has run out or does not
cover such damage.)
to buy a replacement if your
warranty has run out or does not
cover such damage.)
The phone’s temperature is below
0°C or higher than 45 °C.
0°C or higher than 45 °C.
Avoid charging in extreme of
temperatures.
temperatures.
Poor contact between the battery
and charger.
and charger.
Check all connections
– in
particular that the charger is
plugged in properly and turned on.
plugged in properly and turned on.
Shortened standby time
You have been on a different
network (you might be roaming
abroad). To some extent, standby
time depends on the network. The
same phone on different networks
may not provide the same length
of standby.
network (you might be roaming
abroad). To some extent, standby
time depends on the network. The
same phone on different networks
may not provide the same length
of standby.
Temporarily turn off your phone.
The battery is losing charge/
getting old. For example, battery
life is shortened by working in
high-temperature environments.
getting old. For example, battery
life is shortened by working in
high-temperature environments.
Get a new battery.