Hitachi SH-G1000 - Manual (Page 118)

Section 2: Understanding Your Device
110 2F: Managing Call History
Erasing Call History
To erase individual Call History entries:
1. Tap and hold the number on the screen.
2. When the pop-up menu appears, tap Delete .
To erase Call History:
Ⅵ Tap Tools , then Delete all calls .