User's Manual

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54
13. Troubleshooting
Phenomena Analysis Solution
The device cannot be
turned on.
The battery may be installed
improperly.
Remove and reattach the battery.
The battery power may run out. Recharge or replace the battery.
The battery may suffer from poor
contact caused by dirtied or
damaged battery contacts.
Clean the battery contacts.
The touch screen fails
to respond to any taps.
Too many apps are running. Forcibly stop some apps or restart the device.
The keys, screens, or
LED indicators do not
work normally.
The keys, screens, or LED
indicators may fail to function
temporarily.
Restart the device.
The keys, screens, or LED
indicators may be damaged.
Contact your dealer or Hytera technicians for
maintenance.
The touch screen fails
to be unlocked.
The unlock pattern or password
may be incorrect.
Contact your dealer or Hytera technicians for
maintenance.
The device cannot
access the mobile
network.
The SIM card is abnormal or out
of service because of unpaid
charges.

Make sure SIM card functions properly.

Pay the charges, and then restart the device.
The mobile data feature is not
enabled for the SIM card.
Contact the carrier to enable the data connection
feature.
The signal may be weak.
Make sure the device is within the network
coverage.
Both the mobile and WLAN
network are turned on, but the
WLAN connection is unstable.
Turn the WLAN off.
The signal may be weak.
Make sure call participants are within the
communication range.