Z750a_UG_AT&T_P1C_AE.book Page 51 Wednesday, September 12, 2007 8:18 AM
To use the phonelock
1From standby select Menu > Settings
>the General tab > Security > Locks
>Phone protection > Protection.
2Select an option.
3Enter the phonelock code and select OK.
Troubleshooting
Some problems will require you to call your network operator.
For more support go to www.sonyericsson.com/support.
To unlock the phone
•Enter your code and select OK.
To change the phonelock code
1From standby select Menu > Settings
>the General tab > Security > Locks
>Phone protection > Change code.
2Enter 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 
, 
, 
,
, 
.
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
1From standby select Menu > Settings > the General tab > Master reset.
2Select an option:
•Reset settings - resets settings only.
•Reset all - deletes all settings and user data.
3Follow the instructions that appear.
