CL638 3.8W Solar Charge Panel

This Solar Panel is perfect to keep any smartphone powered.
This Solar Panel comes with a detachable multi-head USB cable.

It can also charge other devices with its USB charging capabilities such as action cameras, portable speakers, and more.
Place the solar panel in a sunny place.  Adjust the panel to maximize the power (let the panel be perpendicular to the sunlight at 45-90 degrees) Connect the solar panel to your device using the multi-head USB cable.