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55Troubleshooting
To use the phone lock
1 From standby select Menu > Settings
> the General tab > Security > Locks
> Phone protection > Protection.
2 Select an option.
3 Enter the phone lock code and
select OK.
To unlock the phone
• Enter your code and select OK.
To change the phone lock code
1 From standby select Menu > Settings
> the General tab > Security > Locks
> Phone protection > Change code.
2 Enter the old code and select OK.
3 Enter the new code and select OK.
4 Repeat the code and select OK.
IMEI number
Keep a copy of your IMEI (International
Mobile Equipment Identity) number in
case your phone is stolen.
To view your IMEI number
• From standby press , , ,
, .
Troubleshooting
Some problems will require you to call
your network operator.
For more support go to
www.sonyericsson.com/support.
Common questions
I have problems with memory capacity
or the phone is working slowly
Restart your phone every day to free
memory or do a Master reset.
Master reset
If you select Reset settings, the
changes that you have made to
settings will be deleted.
If you select Reset all, in addition to
your changes to settings, all contacts,
messages, personal data, and content
that you have downloaded, received
or edited will also be deleted.
To reset the phone
1 From standby select Menu > Settings
> the General tab > Master reset.
2 Select an option.
3 Follow the instructions that appear.
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