Sony Ericsson J120 - Manual (Page 49)

48
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.
2 Remove the battery cover.
3 Remove the phone battery and then put it back in place.
4 Replace the battery cover.
5 Turn the phone on.
Content and settings may be lost if you remove the
battery before you turn off your phone.
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