To activate 1-touch dialing, select Menu > Settings and Calling > Call > 1-touch dialing.
To assign a phone number to one of the number keys, select Menu > Settings and Calling > 1-touch dialing.
Select and hold the key to which you want to assign the phone number, and from the pop-up menu, select Assign and the desired phone number from the contacts list.
1 is reserved for the voice mailbox.
To call in the home screen, select Telephone and the assigned key, and press the call key.
To call in the home screen when speed dialling is active, select Telephone, and select and hold the assigned key.