Sony Ericsson R300 User Guide - Page 36

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. 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 Menu > Settings > the General tab > 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. 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 Menu > Settings > the General tab > Security > Auto keylock > On. 36 This is the Internet version of the User's guide. © Print only for private use.