Answer:

roaming

Answer	Crossword Clue
ROAMING	Like some cell phone charges
ROAMING	... charges (cell phone fees)
ROAMING	Straying

ROAMING	Word on a cell-phone bill
ROAMING	Cell phone user's concern
ROAMING	Wandering around
ROAMING	Wandering.
ROAMING	On the loose.
ROAMING	Like some charges on a cell phone
ROAMING	Nomad's activity
ROAMING	Wandering