Apple iPhone 6s S 64GB - Space Gray Model A1633 Read Description NOT Working

This is for a Used Not working Apple iPhone 6s S 64GB - Space Gray Model A1633 Screen is in good condition with no scratches. The backside is also in good condition. Please View the images for better description of the exact condition of this phone. Please Be Advised, we don't know to what carrier this phone belongs to, as we got this phone from a Storage Unit Auction. It does power on, but as soon as it powers on for a bit it powers right off. So it is not working, we're selling it AS IS for parts or repair only.