Insert correct sim card, Emerg. only, No network – Sprint Nextel J120 User Manual
Page 63: Password error, Fully locked, Phone lock code

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Insert correct SIM card
This error message is shown in two cases:
•
The phone only works with certain SIM cards. Insert the
correct SIM card.
•
You entered your personal unblocking key code (PUK)
incorrectly 10 times in a row. Contact your operator. To
unblock
Emerg. only
You are within range of a network, but you are not allowed
to use it. Some network operators allow emergency calls
to the international emergency number 112
No network
There is no network within range or the received signal is
too weak. You have to move to get a signal that is strong
enough.
Password error
You have entered your PIN or PIN2 incorrectly.
Enter the correct PIN or PIN2 and select
Yes
PIN blocked. Enter PUK provided by your operator
or
PIN2 blocked. Enter PUK2 given by your operator
.
You have entered your PIN or PIN2 incorrectly three times
in a row. To unblock your codes
Fully locked
The phone is locked. To unlock the phone
Phone lock code:
Your phone comes with the phone lock code 0000. You
can change it to any four-digit code