TomTom Via User Manual page 53

Tap this button to change the auto-answer settings.
Auto-answer
settings
Tap this button to change your Home phone number.
Change Home
number
Tap this button to disable Bluetooth on your TomTom Via.
Disable
Bluetooth
Tap this button to select information you want to delete. You can
delete the list of recent callers and the list of recently dialled num-
bers.
Delete
53