While charging stations require direct contact with the phone, they can hardly be called truly wireless. The wire is needed at least for connection to the network, and if the phone is removed from the station, it immediately leaves the field of electromagnetic field and stops charging. As long as this happens, all these chargers are half measures on the way to real freedom from wires.

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Developers recently tried to release a device that increases the range of wireless charging. In this direction, several start-ups work. For example, MIT graduates are developing a device Pi Charger, capable of charging several devices at the same time, which are within a radius of 30 cm from him in any direction.

But it is the WattUp Mid Field device from the Energous start-up that can become the first truly wireless and functional at the same time, because a distance of 4.5 already allows you to get free of wires. It transforms electricity into radio frequencies, and then sends them to a special receiver, which equip the device. And this is probably the only minus of technology.

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Perhaps in the future the receiver will be able to integrate into the phone cases. Now the device has received approval from the Federal Communications Commission of the United States.