Troubleshooting - Haier W757 Manuel D'utilisation

Troubleshooting

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