Troubleshooting - Zte Unico LTE Z930L Manual

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
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 effectively reach it.
The network is busy at the current time
Poor reception
(for example, during peak times, there may
be too much network traffic to handle
additional calls).
You are too far away from a base station for
your service provider.
Poor network link quality on the part of
your service provider.
Echo or noise
Poor local telephone line quality.
Your service provider does not support
Unable to select
these features, or you have not applied for
certain features
services that provide these features.
The battery or battery charger is damaged.
The phone's temperature is below 32°F
Battery not
(0°C) or higher than 113°F (45°C).
charging
Poor contact between the battery and
charger.
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Possible Solution
Move to a location where the network
signal can be properly received.
Avoid using the phone at such times, or try
again after waiting a short time.
You can request a service area map from
your service provider.
End the call and dial again. You may be
switched to a better-quality network link or
phone line.
End the call and dial again. You may be
switched to a better-quality network link or
phone line.
Contact your service provider.
Contact the dealer.
Adjust the battery charging environment to
avoid extremes of temperature.
Check all connectors to make sure all
connections have been properly made.
Problem Possible Causes
The standby time is related to your service
provider system configuration. The same
phone used with different service providers'
systems will not provide exactly the same
length of standby time.
Shortened standby The battery is depleted. In high temperature
time environments, battery life will be shortened.
If you are not able to connect to the
network, the phone will continue to send
out signals as it attempts to locate a base
station. Doing so consumes battery power
and will consequently shorten standby time.
Cannot turn your
Battery power has been depleted.
phone on
micro-SIM card malfunction or damage.
micro-SIM card
micro-SIM card inserted improperly.
error
Debris on the micro-SIM card contacts.
micro-SIM card invalid.
You are not within the network's service
Unable to connect
area.
to the network
Poor signal.
Troubleshooting
Possible Solution
If you are located in an area where
signaling is weak, temporarily power off
the phone.
Use a new battery.
Change your location to one where the
network is accessible, or temporarily turn
off your phone.
Recharge the phone's battery.
Take the micro-SIM card to your service
provider for testing.
Insert the micro-SIM card properly.
Use a soft, dry cloth to clean the micro-SIM
card contacts.
Contact your service provider.
Check the service area with your service
provider.
Move to an open space, or if you are inside
a building, move closer to a window.
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