34
charge it.
Problem
Reason
Solution
Echo or noise
Due
to
the
regional problems
because of the
disconnection or
bad
connection
about the network.
Hang up and redial,
the trunk lines may
be replaced with a
better one.
Some phone lines
are poor in some
areas.
SIM
card
appears error
SIM card is
damaged.
Please
contact
your
network
operator.
The SIM card
hasn‘t
been
installed
properly.
Make sure the SIM
card is installed
properly.
There is dirt on
the
metal
surface of the
SIM card
Wipe the metal
contacts of SIM
card with clean
cloth.
