Which country are you from? If i type in *#9900# without pressing anything further it will open up a page called sysdump. Maybe there is a way to access this with a different dial code or through settings. I would show a screenshot of the page if i could.
I made an account just to help you guys..
So i just got done talking with samsung tech support Australia
He told me these steps and it has worked at getting rid of the boxes!
1) key into your dialer (there is a star there at the front 😉) *#9900#
2) should open a page called "SysDump"
3) Select...