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85
be
deleted.)
The
manufacturer
is
not
liable
for
damage
due
to
the
loss
of
data.
o
Do
not
turn
your
phone
on
or
off
when
the
phone
is
close
to
your
ear.
Troubleshooting
Phenomena
Possible
Causes
Unable
to
switch
on
1.
Does
the
battery
have
power?
2.
Is
the
battery
placed
correctly
SIM
failed
1.
The
SIM
card
is
dirty.
Clean
it.
2.
Reinstall
the
SIM
card.
3.
The
SIM
card
is
damaged.
Replace
it.
Poor
signals
Check
the
signal
strength
icon
on
the
screen.
If
the
icon
contains
4
bars,
it
indicates
the
signal
is
the
strongest;
if
below
1
bars,
it
indicates
the
signal
is
very
poor.
86
Unable
to
dial
out
1.
Maybe
you
have
set
Hide
My
Caller
ID
but
your
network
operator
does
not
provide
this
service
for
you.
2.
Strong
interference
exists
around
you.
3.
Maybe
you
have
activated
the
call
restriction
function.
4.
Maybe
you
have
activated
Line
2
but
your
network
operator
does
not
provide
this
service
for
you.
Unable
to
charge
the
battery
1.
The
battery
may
discharge
too
much;
so
it
cannot
be
charged
until
it
is
connected
for
certain
time.
2.
Its
performance
has
worsened.
Unable
to
register
to
the
network
1.
Too
weak
signals
or
strong
interference.
2.
SIM
card
installed
properly?
Bad
contact
or
SIM
card
damaged?
If
the
SIM
card
is
broken,
please
contact
the
network
operator
to
replace
it.