The iPhone 15 Pro Max has an IP68 water resistance rating, which means it can withstand being submerged in freshwater up to a depth of six meters (about 19 feet) for up to 30 minutes. This makes it suitable for use in rain, snow, or even accidental splashes.
It's important to note that the IP68 rating is not a guarantee of waterproofness in all conditions. The iPhone 15 Pro Max is not designed to be used for underwater photography or other activities that involve prolonged exposure to water.
The IP68 rating also does not apply to saltwater or other liquids, such as pool chemicals or soapy water. These liquids can damage the phone's seals and internal components.
While the iPhone 15 Pro Max is water resistant, it's still a good idea to use a case to protect it from scratches, drops, and other damage. A case can also help to keep water out of the ports and seams of the phone.
If your iPhone 15 Pro Max does get wet, dry it off immediately with a soft, lint-free cloth. Do not use a hairdryer or other heat source to dry the phone, as this could damage the internal components.
Never attempt to charge a wet iPhone 15 Pro Max. This could damage the charging port and the internal components of the phone.
If your iPhone 15 Pro Max has been exposed to water and is not working properly, take it to an Apple Store or authorized service provider for evaluation and repair.