79
Problem
Possible Causes
Possible Solution
Unable to enter
information into
the phonebook
The phonebook’s memory is already full.
Delete unnecessary data from the contacts.
Phone crashes,
reboots, freezes,
or cannot be
powered on
Some third-party software is not compatible
with your phone.
Reset the phone to factory status.
Enter safety mode and uninstall the
software that may cause the problem.
Upgrade the phone software.
Troubleshooting
78
For Your Safety
General Safety
Don’t make or receive handheld calls
while driving. Never text while driving.
Keep your phone at least 10 mm
away from your ear or body while
making calls.
Small parts may cause choking.
Your phone can produce a loud sound.
Avoid contact with anything magnetic.
Keep away from pacemakers and other
electronic medical devices.
Turn off when asked to in hospitals and
medical facilities.
Turn off when told to in aircrafts
and airports.
Turn off when near explosive materials
or liquids.
Don’t use at gas stations.
Your phone may produce a bright or
flashing light.
Don’t dispose of your phone in fire.
To prevent possible hearing damage,
do not listen at high volume levels for
long periods.
Avoid extreme temperatures.
Avoid contact with liquids. Keep your
phone dry.
Don’t take your phone apart.
Only use approved accessories.
Don’t rely on your phone for emergency
communications.
Summary of Contents for QUARTZ Z797C
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