5.
Addendum
Common
fault
diagnosis
Fault
phenomenon
possible
reasons
Cannot
turn
on
The
battery
is
discharged.
Charge
it
with
electricity
Wrong
SIM
Card
SIM
card
smudgy,
clean
the
SIM
card.
Reinstall
the
SIM
card.
SIM
card
has
been
damaged,
replace
the
SIM
card
。
Reception
bad
Check
on
the
screen
of
the
signal
strength
indicator,
and
this
is
the
number
of
sy
mbols
in
this
for
5
case
said
the
strong
signal,
2
case
said
the
weak
signal
Phone
can't
dial
you
may
set
the
hide
the
machine
number,
but
your
network
operator
does
not
provide
this
service;
may
have
a
strong
interference
environment
around
signal;
may
you
activate
the
call
barring
function;
may
you
activate
the
line
2,
but
your
network
operator
does
not
provide
this
ser
vice
Battery
can’t
charge
may
have
excessive
discharge
battery,
charger
needed
to
connect
after
a
period
of
time
to
charge;
battery
performance
have
been
worse;
Unable
to
connect
to
the
network
signal
is
too
weak,
or
around
the
radio
interference
SIM
card
is
installed
correctly,
whether
contact
undesirable
or
SIM
card
has
bee
n
damaged?
Such
as
the
SIM
card
is
damaged,
please
you
consultation
network
s
ervice
operators
Photographs
too
dark
brightness
set
low;
environment
light
around
a
dark;
Photographs
too
vague
Shooting
in
a
state
of
motion
object
Press
the
shutter
moment
cell
phone
has
a
slight
shaking
Dark
Can't
enter
service
menu
May
be
your
SIM
card
does
not
support
services
Safety
precautions:
•Use
a
wireless
hands
‐
free
system
(
Headphone,
headset)
with
a
low
power
Blue
tooth
emitter
•
Make
sure
the
cell
phone
has
a
low
SAR
•Keep
your
calls
short
or
send
a
text
message
(SMS)
instead.
This
advice
applies
especially
to
children,
adolescents
and
pregnant
women
•
Use
cell
phone
when
the
signal
quality
is
good
People
having
active
medical
implants
should
preferably
keep
the
cell
phone
at
l
east
15cm
away
from
the
implant
Do’s
and
Don’ts
for
disposal
e
‐
waste
Do’s:
•
Ensure
that
an
Authorized
Person
repairs
your
Symphony
products
•
Call
Our
Local
Authorized
Collection
Centers
to
Dispose
Lava
products
•Always
drop
your
used
electronic
products,
batteries
or
any
accessories
thereof
after
the
end
of
their
life
at
nearest
Authorized
Collection
Point
or
Collection
Ce
nter.
