Overmax Vertis-Expi, User Manual

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The SIM card isn‘t installed
properly.
Check the SIM card
The metal surface of the SIM
card is dirty
Clean it with clean cloth
Poor receiving
The mobile phone is used in bad
signal receiving area, for
example, near tall building or in
basement, the radio waves can’t
reach these area effectively
Please make or answer a call in
places with strong signal
The mobile phone is used when
communication is busy and lines
are congested.
Try to avoid using mobile phone
when communication is busy
Can’t switch on Battery is too low Charge the battery
Can’t make a
call
Call barring is active Cancel call barring
Can’t connect to
network
SIM card is invalid
Please contact your network
operator
Beyond service area
Move to service area of your
network operator
Weak signal
Move to a place with strong signal
and try again
Can’t charge
The voltage is not within rated
range of the charger Use an allowed voltage within the
rated range of the charger
Nonstandard charger is used.
Use a charger specially designed
for the mobile phone
Poor contact
Check whether the plug is
connected properly