Mostly people who are using OLED display iphone they face the iphone green line’s issue in simple words in this problem the user see green line’s on his phone screen it’s really irritating.
First check your lighting cable if it has any problem then try a different cable. After it try to plug your cable in different ports of your computer so that if there will be any problem in your computer port it will be solved. Mostly people face the issue because of this.
First of all high megepixel is equals to better photo quality is just a myth there a are a lot of factors which depends upon your camera quality