User manual

120
UPGRADING THE PHONE SOFTWARE 121
TROUBLESHOOTING
Upgrading the Phone Soware
Use the one-press upgrade package oered by your mobile
service provider to upgrade your phone soware.
Note: Visit the ZTE ocial handset service support website
(http://www.ztedevice.com/support) and click your country or
region to learn more, as well as which phones are supported.
Troubleshooting
If you encounter problems while using the phone, or if it performs
abnormally, you can refer to the chart below. If your particular
problem cannot be resolved using the information in the chart,
contact the dealer where you purchased the phone.
Problem Possible causes Possible solution
Poor
reception
The network signal is too weak
at your current location, for
example, in a basement or
near a tall building, because
wireless transmissions can not
eectively reach it.
Move to a location where the
network signal can be properly
received.
The network is busy at the
current time (for example,
during peak times, there may
be too much network trac to
handle additional calls).
Avoid using the phone at such
times, or try again aer waiting a
short time.
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 link quality on the
part of your service provider.
End the call and dial again. You
may be switched to a better-
quality network link or phone
line.
Poor local telephone line quality.
End the call and dial again. You
may be switched to a better-
quality network link or phone
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.