•
Install
unknown
apps:
Allow
installation
of
unknown
third-party
apps
from
selected
apps
or
sources.
TIP
Installing
unknown
third-party
apps
could
make
your
device
and
personal
data
more
vulnerable
to
security
risks.
Other
security
settings
Configure
additional
security
settings
to
better
protect
your
device.
Options
may
vary
by
service
provider.
◌
From
Settings,
tap
Security
and
privacy
>
Other
security
settings
for
the
following
options:
•
Set
up/change
password:
Require
a
password
to
reset
your
device
to
factory
settings.
•
Set
up
SIM
card
lock:
Set
a
PIN
to
lock
your
SIM
card,
preventing
unauthorized
use
of
your
SIM
card
if
someone
attempts
to
use
it
in
another
device.
•
Make
passwords
visible:
Have
characters
displayed
briefly
in
password
fields
as
you
type
them.
•
Device
admin
apps:
Authorize
security
features
and
apps
to
have
administrative
access
to
your
device.
•
Credential
storage:
Manage
the
trusted
security
certificates
installed
on
your
device,
which
verify
the
identity
of
servers
for
secure
connections.
•
Advanced:
Use
these
options
to
configure
advanced
security
settings
to
better
protect
your
device.
Location
Location
services
use
a
combination
of
GPS,
mobile
network
and
Wi-Fi
to
determine
the
location
of
your
device.
1.
From
Settings,
tap
Location.
2.
Tap
to
turn
on
Location
services.
TIP
Some
apps
require
location
services
be
turned
on
to
function.
133
Settings