No phone is truly waterproof, but the iPhone 13 and its models are more water-resistant than other phones. This doesn’t mean they are completely waterproof, however, but some of their features let them withstand the damage a bit better than other devices. The iPhone 13 is not 100 percent waterproof, however, and was never meant to be.
All models of the iPhone 13 are safe from accidental spills and rain, as well as most common water-related incidents. When it comes to recording things with the phone underwater it becomes a bit more difficult to discuss.
Apple has stated that the iPhone 13 and 13 Mini are splash, water, and dust-resistant under lab conditions and could last up to 30 minutes long in maximum depths of 6 meters. Regardless, taking any piece of equipment into the water is less than advisable considering the risks and costs involved.
After all, while they are water-resistant in a sense, Apple has stated that using them in this manner could decrease resistance over time. Also, you need to wait quite a while to be able to charge a wet iPhone, among other things. While it could survive some incidents, there are risks involved when it comes to bringing your iPhone underwater.