This Year Apple boasts significant improvements to their cameras on their iPhone 12 lineup especially their 12 pro max. Apple claims their larger sensors on the 12 pro max will perform much better in low light situations.
The camera sensor on the iPhone 12 pro max is about 40% larger than on the 12 pro, which means the sensor can absorb more light, improving low light photos. Also, instead of stabilizing the lens, this time on the Pro Max, the actual sensor is stabilized and should reduce shakiness in videos and improve overall image quality.
Suppose you have even been to the Georgia Aquarium, which is the largest Aquarium in the United States, or just an aquarium in general. In that case, you know lighting situations can be precarious if not challenging. Below you can see photos that were shot on the iPhone 12 Pro Max and have not been retouched by me in any way. Also the flash was disabled for all photos taken.

Corner of the Aquarium. . Telephoto x2 zoom .Outdoors great lighting

Cannon Ball Jelly. Standard Wide Angle Lens. Low Light

Coral or Sea Anemone. Standard Wide Angle Lens. Low Light

Orchid. Telephoto X2 Zoom. Moderate Light

Japanese Spider Crab telephoto X2 Zoom . Low Light

South African Penguin. Standard Wide Angle Lens. Moderate Light

Great Hammer Head Shark. Standard Wide Angle Lens. Very Low light + Motion

Weedy Sea Dragon. Standard Wide Angle Lens. Moderate Light

Southern Sea Otter. Standard Wide Angle Lens. Moderate Light

Top of Habitat. Ultra Wide Lens. Great light

Top of Habitat/Workspace. Wide Angle Lens. Moderate Light

Alligator Snapping Turtle. Telephoto Lens X2. Moderate Light