iPhone 6S broken inner display and locked

Hey,

My iPhone suddenly got broken in my pocket, the inner display screen is full of lines and is barely visible, because the outer glass puches on the display the iPhone got locked and tells me to connect it to iTunes.

When i try to connect it to my iTunes it wil not connect because i can't verify trough the broken screen.

Does anybody know how to solve my problem, i have an extra insurance on my phone so i can just send it in but i need to log in and turn of find my iPhone but i can't connect.

all help is welcome !!