Sony Ericsson R300 Benutzerhandbuch

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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. Go to 
www.sonyericsson.com/support for more information.

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 

 > the 

 tab 

> 

 and select an option.

The phone turns itself off

If your phone turns itself off when being transported, something 
in your pocket or bag has activated the on/off key. Turn the 
automatic key lock on. Select 

 > 

 > the 

 

tab > 

 will reset all changes that you have made 

in your phone to default.

 will delete all user data as contacts, messages, 

pictures and sounds in your phone.