phone cameras generally default to auto white balance which is good for snapshots, not so good for color accuracy
trying to get raw files out of phone cameras is not completely impossible, but the images are almost always processed into JPEGs
the main camera is going to boost saturation and contrast (make your image “pop”)
selfie camera is going to focus on “flesh tones”, so less saturation boost (or you look sunburnt) and less contrast boost (smooth out wrinkles and acne)
if you really want to focus on color accuracy over perceptual color, get hold of a gray card or color checker and plan on doing post-processing in something like Lightroom, Darktable, digiKam, RawTherapee or the like
Thanks for the rundown! I tried to adjust all the settings to get a basic unenhanced image but I understand that my use case isn't what a lot of cell phone cameras do.
Good news is most of the time I don't take photos with my phone but a dedicated camera so I'm curious to see if that has similar results or not