i-mobile IQ 511 User Manual page 41

FAQ
SIM Card
Error
Fail to dial
out
Callers can
not contact
you
Cause and Solution
significantly reduce battery charge. It is
recommended that you turn off your
mobile in area with no signal reception to
save battery.
Need replacing the battery. Please change
a new battery.
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 you press the dial key after
dialing.
Please check if calling is forbidden
because of defaulting.
Please check if the SIM is valid.
Please check if the call barring is set.
Please check if the fixed dial function is
set.
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.
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