Monochome is the best hands down. A monochrome sensor with high MP count can help with lossless zooming, while one with large pixel size massively improves the image quality from the main sensor in low light. And being able to shoot photos in monochrome natively is really neat IMO. Telephoto and wide angle camera only have one role on the other hand, they only change the focal length and that's it: they also suck in poorly lit conditions. Though the best will be an advanced sensor combined with the monochrome sensor, look at what Huawei and Sony did with their latest flagships! They are massively above others for night time photography.
As a guy who tried multiple dual camera setups, with Huawei, Iphone, Samsung, Xiaomi, i really must say that one of the best was Iphone 7 plus/8 plus dual setup. Most natural photos with real life colors, excellent and greatest image processing available on market. Huawei is there somewhere just need a little bit with software fix and shall be top. Mate 10 Pro is there somewhere also with P20 Pro, but just cant compare with Iphone superiority image processing.
Talking for LG they should enlarge their wide angle camera again. The went from 135° to 120° and on the G7 to 107° degree. It would also be nice if the get new IMX sensors with a larger pixel size. Compared to Samsung their pixelsize is small now. Though they have flat oled panels in their best flagship Vseries unlike Samsung that only applies again a flat panel in their basic flagship the S10 next year, with only one camera.
1- Asus had wide angle on the normal zenfone 4 and tele on the ZF 4 pro.
2- a photo fanatic can buy a set of good phone lenses (some go for as much as $300 which is just madness if you ask me)
3- a better sensor is always welcome.
4- some of us will still shoot bad photos no matter what the setup, while some will take masterpieces even if theyw were photos of rotten eggs.
GSMArena, again with their absurd poll.
Advanced sensor? Even If you're refering to something like that XZ2 Premium processing trick, we can't call that.
Looking by its choice, BW and Telephoto are the only great choices, since wide-angle-mimicking from multiple photo stitching is a bad idea.
But after all, more than one sensor itself is already a pure money waste.
Tele cameras are the best option. Ultra wide angle cameras show noticeable perspective distortion in landscape photos due to the flat sensor. You can also take a panorama. Tele cameras are very useful for taking photos of birds and other animals and of course very good for portraits. Tele cameras make you see things that your eyes can't see and that's exciting.
Furthermore a penta camera with 5 tele cameras and mirrors could automatically take a wide angle panorama. That's what the Light L16 does. The L16 produces many artifacts, but I am sure it is possible to get better results with better software and just 5 cameras instead of 10.
What does "advanced sensor" mean? I guess that should mean either no dual camera or an additional camera with the same field of view, but with a larger sensor/faster lens.