Maxcom MM820 Plus User Manual page 26

radio waves.
V9 PhoneEasy
Troubleshooting
Phone cannot be switched on
Battery charge low
Battery incorrectly installed.
Failure to charge the battery
Battery or charger damaged
Battery recharged in temperatures.
<.0°C.or.>.40°C.
Charger incorrectly connected to phone
or power socket.
Standby time decreases
Battery charge capacity too low
Phone is too far from base station
constantly searching for signal
Failure to place or receive calls
Call barring activated
PIN code not accepted
Wrong PIN code entered too many times EnterthePUKcodetochange
SIM card error
SIM card damaged
SIM card incorrectly installed
SIM card dirty or damp
Connect the power adapter and charge
the battery for hours.
Check the installation of the battery.
Check the battery and charger.
Improve the charging environment.
Check the charger connections.
Install a new battery.
Searching the network consumes battery
power. Find a place with a stronger signal,
or temporarily turn off the phone.
Deactivate call barring. If this does not
solve the problem, contact the network
operator.
orcontactthenetwork operator
Check the condition of the SIM card. If it is
damaged, contact the network operator.
Check the installation of the SIM card.
Remove the card and reinstall it.
Wipe the contact surfaces of the
SIM card with a clean cloth.
the PINcode,