Sony Ericsson T258C Benutzerhandbuch

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This is the Internet version of the user's guide. © Print only for private use.
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Troubleshooting
Some problems require that you call your service 
provider, but you can correct most problems yourself. 
Remove the SIM card before handing your phone in for 
repair.
Memory capacity and speed
If you have not restarted the phone for a while, you may 
experience problems with its memory capacity and 
speed. You can restart the phone to improve its capacity.
1
Turn the phone off and remove the battery cover.
2
Remove the phone battery and then put it back in 
place.
3
Replace the battery cover and turn the phone on.
Master reset
If you experience problems with your phone such as 
screen flickering or freezing and navigation problems you 
should reset the phone.
From standby select 
Menu
 > 
Settings
 > 
Advanced
 
Master reset
 > 
Reset settings
 and select an option.
Reset settings
 will reset all changes that you have 
made in your phone to default.
Reset all
 will delete all user data as contacts, 
messages, pictures and sounds in your phone.