Screen VS. battery in iphone 6s
I have an iphone 6S with a broken screen, which is still perfectly functioning.
Lately, it started randomly shutting down with battery at 80% and 90%.
My question is whether there is a connection between the two- the broken screen and the (probably) broken battery.
The reason I'm asking is since I would like to know whether changing the battery will solve the shutting down problem, or will it be useless to change the battery without fixing the screen, as the screen is the main cause for the problem.
Thanks a lot for your help