How to find your phone number on iPhone or Android Let's face it: Most of us don't call our own phones very often. If you're like most people, this means you probably don't know your own phone number off-hand, especially if you rarely give it out to people or haven't had it...
The hardware consists of a single stereo 3.5 mm headphone plug, some wire and then optionally three alligator clips to connect the signal generator to the test device. The headphone jack consists of a right and left channel in addition to a ground. Figure 1 shows an image of the headphone...