It's so difficult to determine which smartphone camera is the best... Of course Samsung Galaxies and iPhones are usually touted as the top two with differences coming down to personal preference. There are so many setups... migapixels, aperture, the physical camera, the software. You cannot possibly know which camera is better by looking at the specs.
Presenting two tools:
https://www.dxomark.com/ - which do official reviews of a bunch of cameras (giving photo and video scores)
http://www.gsmarena.com/piccmp.php3?idType=1 - The photo quality comparison tool. Just select phones to compare and move the image around to see how well the picture is taken under controlled conditions (including low light, good light).
Thoughts? Any personal favourite smartphone cameras bar the main two?







