First of all, can solar power charge a mobile phone?
Yes, but if the photovoltaic panel covers the phone and wants to use it to charge the phone, it's just like charging the iPhoneX with an electric toothbrush base. It is possible to charge, but how much to charge for how long may not be as beautiful as you think. At present, although the efficiency of solar energy conversion has improved, the basic maximum conversion rate is more than 20%, what is the comparison with wireless charging? At least the current Qi can reach 80% or even higher, solar energy wants to be applied to mobile phones is still far from it!