User's Manual

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16.2.2 What if the call does not go through?
Your phone can make and receive calls only when it is switched on and in the wireless
network’s service area.
No service means that you are probably outside the wireless service area. No calls can
be made or received.
This number is restricted means calls to the phone number you tried to call are
restricted
16.2.3 Check these points to ascertain if the phone is broken or not.
Symptoms How to Solve the problem
Phone does not immediately turn
on after plugging in charger after
extended period of non-use.
It may be necessary to charge for up to 4 hours to
recharge the battery enough to turn the phone on.
Charge battery as long as needed until phone
turns on.
SIM Invalid Check whether you have inserted the SIM card in
the phone, and whether you have inserted it
correctly.
Enter PIN PIN is set by the user to prevent others from
using this phone. In this case, enter your PIN.
Enter PUK This message appears when the PIN is incorrectly
entered three times in a row. At this time, enter
the PUK you received when you purchased the
SIM card in order to use your phone again. If the
PUK is incorrectly entered more than 10 times,
your SIM card will be permanently blocked, and
you need to purchase a new SIM card.
When this
message
appears
on the
screen
Message “Searching”
is displayed along
with “No Network or
mark.
z When this happens in a service area, turn off
the unit for 2~3 minutes, and then turn the
power back on.
z If this continues for some time without any
reason, contact the nearest BRIGHTSTAR