Answer:

PHONE

Answer	Crossword Clue
PHONE	Cellular device
PHONE	Call up
PHONE	Cellular caller

PHONE	Conversation piece
PHONE	Make a call
PHONE	Omnipresent ringer
PHONE	Gizmo patented by Bell
PHONE	E.T.'s contraption
PHONE	Call
PHONE	Cell, maybe
PHONE	Words with tag or home

PHONE	Many a cell
PHONE	Cell or mobile follower
PHONE	Ring
PHONE	It may be clipped to a belt
PHONE	Cell, for one
PHONE	Caller's device, and word that can precede the ends of the answers to starred clues
PHONE	Text alternative
PHONE	Word after cell or wall

PHONE	.. tag
PHONE	Cellular transmitter
PHONE	"E.T. .. home"
PHONE	App-using device
PHONE	It has a ring to it
PHONE	Get on the horn
PHONE	... tag
PHONE	Bell invention

PHONE	Bell's invention
PHONE	Bob Newhart prop
PHONE	Give a ring
PHONE	Hands-free ...
PHONE	Mobile thing
PHONE	Telemarketing tool
PHONE	Give a buzz
PHONE	One can be called on it

PHONE	Communications device described by the first words of the puzzle's four longest answers
PHONE	Contact, in a way
PHONE	It may be handsfree
PHONE	Dial up
PHONE	It helps you stay connected