CNN says you can make money on your phone by selling them as stock photos.
According to CNN,
"Most of us keep hundreds of images on our phones. But not many people are making money off of them.
"I think of it as investing," says Megan Betteridge, 23, a recent college graduate who started selling stock-photography last January as a side hustle. "Your pictures are just sitting on your hard drive. Why not put the pixels out there and make a little money at the same time?"
You can see the entire article here.