When the operating unit is at {HEAD ~ an operating position}, it is closely attached to {TAIL ~ an input unit} provided on the front surface of a mobile phone 
When the operating unit is at { HEAD ~ an operating position } , it is closely attached to { TAIL ~ an input unit } provided on the front surface of a mobile phone
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH