5
Note:
If
the
screen
shuts
down
while
the
handheld
device
is
running,
you
can
awake
it
by
a
short
press
on
PWR
key.
②
Power
off
and
restart
Keep
pressing
the
PWR
key
for
3
seconds,
and
then
a
prompt
box,
in
which
you
can
choose
power
off
or
restart
option, will pop up on the screen.
2.2.2
Install
and
uninstall
SIM
card
①
Install
SIM
card
You
should
plug
the
SIM
card
in
the
slot
softly,
and
make
sure
it
won
t
be
ejected
out.
②
Uninstall
SIM
card
Press
the
SIM
card
lightly,
and
then
the
card
will
be
ejected
out
mechanically.