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.
credit card mobile phones are unreliable during emergencies
( z1 possible :polarity - :ARG1 ( z2 rely :ARG1 ( z3 phone :ARG1-of ( z4 mobile ) :instrument ( z5 card :mod ( z6 credit ) ) ) ) :time ( z7 emergency ) )