is a reviewer with 10 years of experience writing about consumer tech. She has a special interest in mobile photography and telecom. Previously, she worked at DPReview. Chinese phone brand Infinix is known to show off a flashy concept, and at this year’s MWC the company is looking skyward for inspiration. It’s showing a phone with an integrated solar panel on the back, as well as a solar charging phone case. They’re both in the concept phase, but the demo units I saw at MWC were functional and the idea is plenty appealing. Infinix calls this SolarEnergy-Reserving technology, and it...