You can shoot in raw on iphones now to prevent this or fix it later.

Thanks, but now doesn't do me any good then

The sun will come up tomorrow, there was a whole song about it.

Capturing raw on iPhone in a low-light situation shows you just how far the sensors have to come if you aren't throwing the whole bag of software magic at it, in my experience.

It's useful for cases of "you're noise reduction is fucking with my texture" in decent lighting or similar, but in lower light I haven't found it to be a worthwhile tradeoff.

On recent iPhones Apple has added "ProRAW" which retains a lot of the magic processing without losing the ability to make a lot of adjustments you'd do on RAW photos like white balance correction.

Turn off auto white balance and set it to "daylight", problem solved.