The IP Code has two ratings, each represented by a single numeral, with larger numbers reflecting higher degrees of protection. The first character of the IP Code is for particles, ...

We've observed a trend toward increased water resistance in mobile devices, but “water resistant” is not a one-size-fits-all term and it does not mean the same thing as “waterproof”.

Is your iPhone or Android waterproof? Hidden ‘IP code’ can tell you. Jamie Harris, Technology and Science Reporter; Published: 16:56, 18 Aug 2022; Updated: 18:18, 18 Aug 2022; ...

An Ingress Protection (IP) code will tell you about a phone’s water and particle resistance, making it easier to compare different models. So, what does this all mean for the iPhone 15 series?