17
5.5
PIN
5.5.1
Unlock
and
lock
a
SIM
card
PIN
code
is
the
identification
password
for
a
SIM
card,
preventing
it
from
embezzlement.
If
your
SIM
card
is
locked
with
a
PIN
code,
you
have
to
unlock
the
SIM
card
before
accessing
the
internet.
Procedures
for
unlocking
the
locked
SIM
card:
Step
1
Insert
a
SIM
card,
and
log
into
the
web
UI.
A
pop
‐
up
window
appears.
Click
PIN
.
Step
2
Enter
the
PIN
code
of
the
SIM
card,
click
Unlock
PIN
.
‐‐‐
End
Wait
for
the
processing
of
the
router
until
Completed
is
shown
in
the
page.
If
you
want
to
lock
the
SIM
card,
choose
PIN
>
SIM
Lock/Unlock
Configuration
and
click
Disable
.
5.5.2
Change
the
PIN
code
When
the
SIM
card
is
unlocked,
you
can
change
the
PIN
code
for
it.
Procedures
for
changing
the
PIN
code:
Step
1
Start
a
web
browser
on
the
device
connected
to
the
router,
and
visit
192.168.0.1
.
Step
2
Choose
WAN
>
PIN
.
Step
3
Choose
Change
PIN
code
,
and
enter
PIN
code
and
customize
a
New
PIN
code
.
