Forget about sockets, get some sunshine for your phone
Sunpartner Technologies, a French company based in Aix-en-Provence just introduced their new working demo phone to the Mobile World Congress 2016 in Barcelona, Spain. With anew invisible solar technology calledWysips (What You See Is Photovoltaic Surface),the solar cell is completely transparent.
You dont need to carry a charger any more, or to find an available socket, just some sunshine. It can even work with artificial light.
See more of this breakthrough technology on their YouTube channel.