Phone fan? (6)
I believe the answer is:
blower
This clue is a double definition.
'phone' is the first definition.
(informal term for telephone)
'fan?' is the second definition.
(I know that blower is a type of fan)
(Other definitions for blower that I've seen before include "It produces an air blast" , "Fan - telephone (slang)" , "Speaking-tube" , "One producing current" , "Fan; telephone (colloq.)" .)