and is intended to pad out a phone’s reserved charge while it’s not in use. The phone with built-in solar panel on the back is pretty self-explanatory, but I think the case is more interesting.

You don’t need to tell me the benefits of solar power. A couple of years ago ... that this tech isn’t going to replace your phone charger, even if you live in one of the sunniest places ...

A solar-powered smartphone and a color-changing E Ink phone. While still in the prototype phase, both concepts highlight the brand’s experimental approach to mobile technology. Infinix’s new ...

But Infinix is pitching something else: solar power in the phone itself to charge its battery when users are out in the sun. At the show, Infinix demonstrated its SolarEnergy-Reserving technology ...