https://blog.wongcw.com/2018/12/08/dxomark%ef%bc%9aiphone-xr-%e6%98%af%e6%9c%80%e5%a5%bd%e7%9a%84%e5%96%ae%e9%8f%a1%e9%a0%ad%e6%99%ba%e8%83%bd%e6%89%8b%e6%a9%9f/