That’s what the future may hold. It may sound more like science fiction, but a prototype phone that harvests power from electromagnetic radiation has researchers at Nokia convinced of the ability to recharge a phone without plugging it in.
Nokia is working on technology that draws power from ambient radio waves—maybe enough to keep a mobile phone charged.
Ambient electromagnetic radiation—emitted from Wi-Fi transmitters, cell-phone antennas, TV masts, and other sources—could be converted into enough electrical current to keep a battery topped up, says Markku Rouvala, a researcher from the Nokia Research Centre, in Cambridge, U.K.
Using electromagnetic radiation that constantly surrounds us because of Wi-Fi, cell phone, and TV antennas, power generation is much like that of RFID tags. Nokia says the technology will likely work with a solar panel to charge the phone battery.