Chosen Solution

So I have a broken iPhone 7 screen and I have a iPhone 6s. Seeing that the dimensions and the display specs are very similar I am curious if it is possible if I could save money by just switching the screens. I want to know if this is possible in the first place before I go through the trouble of finding out how to go about doing it.

Nope.

first issue is that the connectors will not connect to eachother. however, even if you have the ability to manually jump each pin, the PLDs on the motherboard will not support the Logic Circuits of the 6S. You will unfortunately need to purchase an iphone 7 LCD assembly.