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.
The credit card mobile phones now provided on some aircraft are very expensive. 
( z1 expensive :degree ( z2 very ) :domain ( z3 phone :ARG1-of ( z4 mobile ) :instrument ( z5 card :mod ( z6 credit ) ) :ARG1-of ( z7 provide :ARG2 ( z8 aircraft :mod ( z9 some ) ) :time ( z10 now ) ) ) )