Troubleshooting, Common questions – Sony Ericsson Z780i User Manual
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Troubleshooting
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
.
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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