Apple does come out with innovations and has quite a creative team of developers and designers. Since mobile phones came out there have been needs of better batteries, while some call for fuel cells, others might prefer solar-cells, such as Apple, atleast that's what's on their latest patent.

The filing said that information regarding the performance of a device’s solar cells could be displayed on the main screen next to info for battery power, text message alerts and time of day. Or this information could also appear on top of the solar cells themselves, which are likely to display some version of the Apple logo

Source: Forbes via 2DayBlog