Resource LetsGoDigital drew attention to a patent issued by Xiaomi on a smartphone with a “frameless” design and built-in solar battery. It takes up most of the back panel, leaving space at the top and bottom. On the screen of the smartphone there are also no openings and slots – the front camera can be under the screen or in a sliding element.
When considering the sketch, it cannot be said that the device became thicker due to the integrated solar battery, but this is only a drawing.
The idea of charging a smartphone using a solar battery is not new, other vendors have already tried to implement this (in particular, LG), and special cases have been produced. But the effectiveness of such decisions is not sufficient for convenient use, so the decision did not stick.