User's Manual

Troubleshooting 85
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.
Wrong PIN/Wrong PIN2
You have entered your PIN or PIN2 incorrectly.
Enter the correct PIN or PIN2, and press
Yes.
See “SIM card lock” on page 82.
Codes do not match
When you want to change a security code
(for example, your PIN) you have to confirm the
new code by entering it again. The two codes that
you have entered do not match.
See “SIM card lock” on page 82.
PIN Blocked/PIN2 blocked
You have entered your PIN or PIN2 incorrectly
three times in a row. To unblock your phone,
see “SIM card lock” on page 82.
PUK blocked – contact operator
You entered your personal unblocking key code
(PUK) incorrectly 10 times in a row.
Contact your network operator or service provider.
Phone Locked
The phone is locked. To unlock the phone,
See “Phone lock” on page 82.
Phonelock code:
Your phone comes with the phonelock code, 0000.
You can change it to any four- to eight-digit code.
See “Phone lock” on page 82.
Number not permitted
The Fixed Dialing function is on and the number you
have dialed is not on your fixed numbers list. See
“Fixed dialing” on page 42.
Charging, alien battery
The battery you are using is not a Sony Ericsson-
approved battery. Please refer to “Guidelines for
Safe and Efficient Use” on page 86 and “Limited
Warranty” on page 90.
T637UG.book Page 85 Friday, January 9, 2004 10:46 AM