While there is more than one type of wireless charging technology, your smartphone is likely being powered up via electromagnetic induction through copper coils embedded in the phone and the charger if you are using a wireless charger. While you must plug in the charging station to power it, you can place the phone on the charger to make the proper connection and start charging. Apple-compatible MagSafe chargers also allow you to place a phone on the charging bed without worrying about proper placement (or disconnecting, thanks to magnetic contacts) and use your device while charging it.