Chosen Solution
Hi, I have an iPhone 6s with a broken camera caused by dropping the phone. If I buy a cheap, non-functional (e.g., water-damaged) iPhone 6s from eBay, is it possible to take the camera out of the non-functional iPhone and put it in my iPhone?
Yes. I am assuming that this is the rear camera. You can even get the camera here. iPhone 6s Rear Camera If the lens is all scratched then you will need to go with the other phone route or buy a rear case as well. Here is the camera replacement guide. iPhone 6s Rear Camera Replacement Here is the link to the rear case if you decide to do that. iPhone 6s OEM Rear Case Happy fixing.