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.
Some aircraft only provide credit card mobile phones in first class
( z1 provide :ARG0 ( z2 aircraft :quant ( z3 some ) ) :ARG1 ( z4 phone :ARG1-of ( z5 mobile ) :mod ( z6 card :mod ( z7 credit ) ) ) :mod ( z8 only ) :location ( z9 class :ord ( z10 ordinal-entity :value 1 ) ) )