The fact that he sent you a dick pic right after heavy petting with you is mostly all you need to know. NC. No Class. This guy is not the sort of person you should continue pursuing a relationship with. I get the impression he's only interested in one thing.
His whole story about himself sounds dodgy. I have no problem with a guy living with his mother while he attends school--that's rather smart, in fact. If he is, in fact, living with his mother and going to school.
But the fact that he hid it while asking for all kinds of pictures of where you live is not good and points to a possibly unsafe situation. I hope you only sent images of the inside of your apartment and not the outside. And I hope you did not send him pictures of your bedroom.
It's weird for a person to ask for images of your home if he has your address. He can get the exterior images from Google, and he has zero need for any interior images.
I kind of give him a pass on calling you when he says he will because I have ADD and will completely forget to call someone back. I literally have to set phone alarms to remind myself to do things, like call people back when I say I will.
I feel like this guy wants to get too intimate with you too fast. This is a guy I would avoid.