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Problem Possible Causes Possible Solution
Cannot answer
incoming calls
You have activated the Call barring
feature.
In Phone app, press the Menu Key >
Settings > Call Barring Settings, and
then check Deactive All.
Cannot make
outgoing calls
You have activated the Call barring
feature.
In Phone app, press the Menu Key >
Settings > Call Barring Settings, and
then check Deactive All.
You have activated the Fixed dial
numbers feature.
In Phone app, press the Menu Key >
Settings > Fixed Dialing Numbers and
disable it.
PIN Code blocked
You have entered an incorrect PIN code
three consecutive times.
Contact your service provider. If the service
provider provides the (U)SIM card’s PUK
code, use the PUK code to unlock the (U)
SIM card.
Phone crashes,
reboots, freeze, 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.
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Troubleshooting
80
General Safety
For Your Safety
Don’t make or receive handheld calls
while driving. And never text while
driving.
Keep your phone at least 0.6 inches
(15mm) away from your ear or body
while making calls.
Small parts may cause choking.
Your phone can produce a loud sound.
Keep away from pacemakers and other
electronic medical devices.
Switch off when asked to in hospitals
and medical facilities.
Switch off when told to in aircrafts
and airports.
Switch off when near explosive
materials or liquids.
Don’t rely on your phone for emergency
communications.
Don’t use at gas stations.
Your phone may produce a bright or
flashing light.
Don’t dispose of your phone in fire.
Avoid contact with anything magnetic.
Avoid extreme temperatures.
Avoid contact with liquids. Keep your
phone dry.
Don’t take your phone apart.
Only use approved accessories.