The results from Nokia's solar charging experiment are in, and while it is possible to juice up your phone via the Sun's rays, it's nowhere near consistent enough yet.

For the experiment, Nokia have used their C1-02 (one of their millions of dumbphones), attached solar panels onto the back, and sent them to a variety of countries over the last six months.  Five participants were selected from across the world: two in the Arctic Circle, one in Southern Sweden, one in Kenya, and one in the Baltic Sea, each with varying lifestyles and varying weather conditions to give this a fair shot.