Clear Call Timers - Nokia 3360 User Manual

From this point on, each call you make or receive will be timed. After a
call has ended, press any key on your phone to clear the current call's
duration from the screen.

Clear call timers

1 Press Menu 2 > 5 > 5 (Call register > Call duration > Clear timers).
The Security code field appears.
2 Enter your security code and press OK.
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