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Problem Possible Causes Possible Solution
PIN Code
blocked
You have entered an incorrect
PIN code three consecutive
times.
Contact your service provider.
If the service provider provides
the micro-SIM card’s PUK code,
use the PUK code to unlock the
micro-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.
Uninstall the software that may be
causing the problem.
Upgrade the phone software.
Problem Possible Causes Possible Solution
Cannot turn
your phone on
Battery power has been
depleted.
Device has “Download Mode”
activated; LED indicator light is
glowing constant red.
Recharge the phone’s battery.
Press Power Key for
approximately 12 seconds to
reboot the device.
micro-SIM
card error
micro-SIM card malfunction or
damage.
Take the micro-SIM card to your
service provider for testing.
micro-SIM card inserted
improperly.
Insert the micro-SIM card
properly.
Debris on the micro-SIM card
contacts.
Use a soft, dry cloth to clean the
micro-SIM card contacts.
Unable to
connect to the
network
The micro-SIM card is invalid. Contact your service provider.
You are not within the network’s
service area.
Check the service area with your
service provider.
Poor signal.
Move to an open space, or if you
are inside a building, move closer
to a window.
Cannot answer
incoming calls
You have activated the Call
barring feature.
Disable this feature. See Bar
Certain Calls.
Cannot make
outgoing calls
You have activated the Call
barring feature.
Disable this feature. See Bar
Certain Calls.
You have activated the Fixed
dial numbers feature.
Disable this feature. See Use Fixed
Dialing Numbers.
Troubleshooting Troubleshooting
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