10.2
Trouble
shooting
Common
problems
Causes
Solutions
Bad
reception
Radio
waves
cannot
communicate
with
device
when
it
is
used
in
a
bad
signal
area,
like
basement
or
space
besides
tall
building.
Replace
the
fuse
Cannot
talk
in
Call
‐
intensive
period.
Devicefails
to
switch
on
No
power
Calls
fail
toget
through
Have
not
setup
the
family
number
for
that
key.
Device
fails
connect
to
the
network
SIM
card
installed
incorrectly
Check
the
SIM
card
The
sheet
mental
of
SIM
card
is
dusty
Wipe
with
a
clean
wiper.
Invalid
SIM
card
Contact
your
internet
service
provider
Out
of
GSM
service
area
Move
back
to
the
GSM
service
covered
area.
Weak
signal
Try
again
in
a
strong
signal
area
Devicefails
to
be
charged
Voltage
is
out
of
charging
range
of
charger.
Change
to
the
proper
voltage
Use
non
‐
standard
charger
Use
charger
that
come
with
the
package
Poor
contact
Check
if
the
plug
is
in.
Fail
to
check
location
information
SIM
card
does
not
support
GPRS
functions
Please
contact
SIM
card
sell
service
to
activate
GPRS
functions
Reply
“not
receiving
data,
please
try
again”
all
the
time
Please
contact
with
your
distributors
or
selling
services
Cannot
check
with
none
preset
family
numbers
Please
set
your
phone
number
as
family
number
