No one ever shows their phone on a charger in a pr statement. It's the teather that no one likes to talk about. Solar powered calculators have been around for many many years. I own one and never take it out of my office. It still works. It literally never sees the sun. But it still works. That tech is what thirty years old at least ?

What we need to consider is with a solar phone, can U capture enough energy to power the phone continuously for a 24 hour period under normal user conditions.

Well my friends it comes down to the better mouse trap imo.

There are a few parameters one must know to answer the question. what is the energy capture capacity of the solar panel. What is the storage capacity of the battery. "Battery life" How much energy will be lost "storing power" and how much energy will be lost " using power" and how much power will be consumed in data transmission.

I am not a electrical engineer, but I am sure a simple equation could be written using current specs of batteries, phones, and solar panels to figure how close we already are to solving that problem with over the counter supplies.

Personally I wish my phone could charge itself. I am tried of buying new cords to charge my phone everytime my cord is lost, stolen, or just plain craps the bed.

Now here is my "Jetson's" moment. What if your screen doubled as the solar panel and you could view your screen in full sun with no problem. Now that would be bad A$$!!!