Actually it is either a Sony or Samsung camera unit, apple do not own or design any cameras.
Most often it's a Sony unit inside taking your pictures.
As for truer/more life-like colour tones, it's extremely subjective. It's all down to how your eyes are at interpretating the colour, and what you've been guided to accepting.... So if only ever had iPhones, you'll only see iPhone pictures, and vice versa for other makes.
I've never been totally one phone or another, and I have a diploma in photography (old school with film), and I see good.in both.
For me, the camera is a massive selling point. As each phone has developed, so have the cameras, even if one.company still uses the same camera for years!
Only a proper camera with a huge megapixel nor decent film, will ever get a true likeness, but again all the equipment doesn't take away from the eye! A bad photographer will take a shit pic on expensive equipment!