Samsung GT I8000 User Manual page 46

Assign a ringtone to a contact card
1
Tap Start > Phonebook.
2
Tap a contact in the device's memory.
3
Tap Edit.
4
Scroll down and tap Add field.
5
Scroll down and tap the ringtone field.
6
Select a ringtone.
7
Tap Done.
8
Tap Done twice to save the contact card.
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