Nokia 640 - Erase Recent Call Lists (Menu 3 4); Show Call Duration (Menu 3 5)

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1. In the
Call register menu, scroll with or to Dialled
numbers
and press Select.
2. Scroll with or through the list.
Erase recent call lists (Menu 3 4)
You can delete all phone numbers appearing in Menus 3 1, 3 2 and
3 3.
1. In the
Call register menu, scroll with or to Erase recent
call lists
and press Select.
2. Scroll to
All, Missed, Dialled, or Received.
3. Press OK to delete the phone numbers or Back to
cancel the operation.
Show call duration (Menu 3 5)
You can view the duration of your calls and clear the timers.
1. In the Call register menu, scroll with or to Show call
duration
and press Select.
2. Scroll to one of the following functions:
Last call duration (Menu 3 5 1)
shows the duration of the last (or current) outgoing or incoming
call in hours, minutes and seconds.
Dialled calls’ duration (Menu 3 5 2)
shows the total duration of calls made.
Clear timers (Menu 3 5 3)
resets all timers. Press OK, key in the security code, and
press OK.
Note: The actual time invoiced for calls by your service
provider may vary, depending on network features,
rounding-off for billing, and so forth.