Sony Ericsson HBH-PV720 User Guide

66

Troubleshooting

To reset code memo

1

From standby select 

> 

.

2

Enter an incorrect password 3 times. 

3

 appears.

4

Select 

. 

Where can I find the regulatory 
information such as my IMEI number 
if I cannot turn on my phone? 

Error messages

There is no SIM card in your phone or 
you may have inserted it incorrectly.

See To insert the SIM card on page 8.

The SIM card connectors need 
cleaning. If the card is damaged, 
contact your network operator.

 

Your phone is set to work only with 
certain SIM cards. Check if you are 
using the correct operator SIM card.

 or 

 

You have entered your PIN or PIN2 
incorrectly.

Enter the correct PIN or PIN2 and 
select 

. See PIN on page 5.

You have entered your PIN or PIN2 
code incorrectly three times in a row.

To unblock, see SIM card lock on 
page 61.

 

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 61.

Y

our phone is in flight mode. See 

Your phone is not receiving any 
network signal, or the received signal 
is too weak. Contact your network 
operator and make sure that the 
network has coverage where you are.