How do you delete the recent recipients on lg gs170?

Make sure you have your data (contacts and other info) saved to a microSD card. Turn off the phone, remove the card. In the main menu go to Settings-> Phone -> Reset Settings -> Master Clear -> Phone. You will get a warning that asks that settings reset to default value and data will be deleted. Continue? Yes. The phone will clear and the recent recipient list will be gone. You will have to restore your contacts from the memory card.