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181
T
rou
bles
ho
oting
I pressed the
power key, but
nothing
happened.
Be sure to press and hold
P
(the
power key) until the display
appears and you hear an alert.
This could take several seconds.
If nothing happens, check that a
charged battery is installed. See
page 18.
The display
says:
Insert SIM Card
or
Check SIM Card
even though I
have inserted
my SIM card in
the phone.
The SIM card may be incorrectly
inserted. Check the SIM card to
make sure that it is inserted
properly. See page 16.
The display
says:
SIM Blocked
.
How do I
unblock my
SIM card?
Call your service provider (the
company that sends you your
monthly wireless service bill) to
obtain the PIN unblocking key
(PUK) code. See page 157.
The display
says:
Enter
Unlock Code
.
How do I
unlock my
phone?
Enter the factory-preset unlock
code (1234), or the last 4 digits of
your phone number. If this fails,
call your service provider (the
company that sends you your
monthly wireless service bill).
Problem
Solution
Summary of Contents for T721
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