Use this cable to connect your smartphone to your intercom. Plug one end into the phone and the other into a standard PJ jack. The phone will record everything you hear and say through the headset, including intercom and ATC communications. The cable includes a female plug to connect to your headset so you're not blocking an intercom jack. Compatible with: All iPhone and iPad models with a 3.5mm headphone jack and most Android devices with a 3.5mm jack. Tested on Samsung Galaxy series phones. *Not compatible with digital video cameras, DSLR cameras, or digital audio recording devices or iphones 7, 8, X without lightning to 3.5mm adapter. Not compatible with iPhone 15. Please see our Digital Audio Recorder Cable for these devices. *Smartphone not included Why does this cable not work with my video camera or digital audio recorder? Smartphones use the headphone jack for both audio output and input. In order to do this, a fourth pole was added to the standard 3.5mm connector. However, long before the advent of smartphones, digital audio recorders were using the standard 3-pole 3.5mm connector. COMPATIBLE WITH: Standard fixed-wing twin-plug PJ headsets. NOT COMPATIBLE WITH: Digital Audio Recorders or DSLR cameras.