The credit card mobile phones now provided on some aircraft, do not interfere with aircraft systems because they are wired to a special "base station" that has been designed to safely receive and transmit radio signals in the aircraft.
Any mobile phone can be safely used on a plane.
( z1 possible :ARG1 ( z2 use :ARG1 ( z3 phone :ARG1-of ( z4 mobile ) :mod ( z5 any ) ) :ARG0-of ( z6 safe ) :location ( z7 plane ) ) )