The iPhone 7 Plus has IP67 under IEC standard 60529. Splash, water, and dust rating. This provides an extra layer of protection against environmental damage, allowing users to use their phone outdoor with better confidence and if the phone gets wet, you know it's not the end of it. I can't recall how many times my phone fell down the toilet or got wet from spilling drinks on it, and I needed to send it to the lab for part replacements. Now with the iPhone 7 Plus, I don't need to worry about that anymore, and I can go to the beach with it and not worry about any dust particles or splash of water damaging the device.