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