cordova emulate ios --list
#Available iOS Virtual Devices:
#    iPad-2, 9.3
#    iPad-Retina, 9.3
#    iPad-Air, 9.3
#    iPad-Air-2, 9.3
#    iPad-Pro, 9.3

cordova emulate ios --target="iPhone-4s, 9.3"
cordova emulate ios --target="iPad-Air-2, 9.3"
cordova emulate ios --target="iPhone-6s, 9.3"
cordova emulate ios --target="iPhone-6-Plus, 9.3"