Still looking down on solar-powered phones? Then take a look at Nokia's Eco Sensor.

Nokia Research Center has recently released a new concept phone - Eco Sensor. It is solar-powered, with a high-definition display screen. Moreover, it can automatically test the user's physical condition, the current environment, and local weather, etc.

Compared with the overwhelming number of domestic Chinese solar-powered phones, the telecom giant Nokia is relatively pragmatic.