Sony Ericsson K770i User Manual
Page 70
68
Troubleshooting
Insert correct SIM card
Your phone is set to work only with
certain SIM cards. Check if you are
using the correct operator SIM card.
Wrong PIN
/
Wrong PIN2
You have entered your PIN or PIN2
incorrectly.
Enter the correct PIN or PIN2 and
select
Yes
PIN blocked
/
PIN2 blocked
You have entered your PIN or PIN2
code incorrectly three times in a row.
To unblock, see SIM card lock on
page 64.
Codes do not match
Codes that you have entered do not
match. When you want to change a
security code, for example your PIN,
you have to confirm the new code.
See SIM card lock on page 64.
No netw. coverage
Your phone is in flight mode. See
Flight mode on page 6.
Your phone is not receiving any radio
signal, or the received signal is too
weak. Contact your network operator
and make sure that the network has
coverage where you are.
The SIM card is not working properly.
Insert your SIM card in another phone.
If this works, it is probably your phone
that is causing the problem. Please
contact the nearest Sony Ericsson
service location.
Emerg. calls only
You are within range of a network,
but you are not allowed to use it.
However, in an emergency, some
network operators allow you to call the
international emergency number 112.
See Emergency calls on page 19.
PUK blocked. Contact operator.
You entered your personal unblocking
key code (PUK) incorrectly 10 times in
a row.
Charging, alien battery
The battery that you are using is not a
Sony Ericsson-approved battery. See
Battery on page 72.
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