22
credit
card,
phone
card,
bank
book,
or
subway
ticket
near
your
phone.
The
magnetism
of
the
phone
may
damage
the
data
stored
in
the
magnetic
strip.
o
Talking
on
your
phone
for
long
period
of
time
may
reduce
call
quality
due
to
heat
generated
during
use.
o
When
the
phone
is
not
used
for
a
long
period
time,
store
it
in
a
safe
place
with
the
power
cord
unplugged.
o
Using
the
phone
in
proximity
to
receiving
equipment
(i.e.
TV
or
Radio)
may
cause
interference
to
the
phone.
o
Do
not
immerse
your
phone
in
water.
If
this
happens,
remove
the
battery
and
take
it
to
Authorized
Service
Center.
o
Do
not
paint
your
phone.
o
The
data
saved
in
your
phone
might
be
deleted
due
to
careless
use,
repair
of
the
phone,
or
upgrade
of
the
software.
Please
backup
your
important
phone
numbers.
(Ring
tones,
text
messages,
voice
messages,
picture,
and
videos
could
also
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
