Over time, the jack and plug have spawned different ... it was common to see a third ring to handle stereo audio. At first, the stereo plugs were given a sharper tip so it would be possible ...

The 3.5mm headphone jack is an industry standard audio plug. Most commonly used for connecting a pair of stereo headphones to your smartphone or 'piping' your audio from your phone to an external ...

Some manufacturers opt for placing a 3.5mm audio jack on this remote control instead of directly on the phone itself. The reason for this is that 3.5mm jacks take up quite a lot of internal space ...