You can delete the entire list of recent calls at once or selectively delete entries.
Open the Call logs tab.
Tap the Menu Key .
Tap Delete to select entries to remove from the list. Checkmark the entries to delete, tap Delete, then Yes.
Tap Delete all to remove all of the entries from the list. Tap Yes to confirm you want to clear the entire list.
You can also select a specific number to be deleted. Touch and hold an entry in the Call logs list to open the Context menu. Tap Delete all logs of this number, then tap Yes to confirm.