Haier L56 User Manual page 64

Troubles
Fail to
turn on remove and install it again, retry to turn it on;
strong signal and try connecting to the network again;
Fail to
connect
coverage of service providers;
network
contact your network provider for further information;
Poor basement, the signal might be weak. Try searching a
quality of location with stronger signal reception and call again.
calling
communication, like commute time, you may be unable
to call because of line congestion.
cloth to wipe the metal touch point on an SIM card.
SIM
Card Error
network service provider.
Callers
with the network.
cannot
contact
activated.
you
Fail to
set some
functions or you have not applied for it.
Press the Power Key for over 1 second.
Check if the battery is properly connected. Please
Check if battery is appropriately charged.
Weak signal. Please try and move to a location with
Please ensure that you are not beyond the network
Please ensure you have a valid SIM card. Please
Please check if the sound volume is tuned improperly
In an area with poor receiving condition, example:
While using the mobile phone in the peak period of
Dirt on the metal surface of an SIM card. Use clean
The SIM card is not installed.
The SIM card is damaged. Please contact your
Please check if the mobile phone is on and connected
Please check if the Call barring or call divert is
Please check if the SIM card is valid.
Wrong operation.
The network provider does not support the function,
Cause and Solution