With the iPhone 7 series, the iPhone 8 series is also rated as IP67 rating in the IEC60529 standard test. So what does this IP67 level mean? IP67 refers to the protection security level, IP (Ingress Protection) defines an interface on the liquid and solid particles of protection.
The first number "6" is the dust level, and the second number "7" is the waterproof rating of the device. IP67 means that the iPhone 8 and iPhone 8 Plus can be completely free from dust, and can be soaked in 1.5 meters deep underwater for 30 minutes. The iPhone 8 and iPhone 8 Plus are watertight, but they are not completely waterproof.
In addition, iPhone 8 series and iPhone 7 series of protection levels have reached IP67, but this is not the highest level of protection on consumer equipment. GalaxyS8, GalaxyNote8 and LGV30 Android flagship mobile phone protection class have reached the IP68.
It should be mentioned that the IP rating of the device does not allow it to be resistant to all liquids. Pressurized water is easy to damage the phone's waterproof seal design, and infiltration into the equipment caused damage. Similarly, salt water or seawater on the iPhone 8 and iPhone 8 Plus is also very destructive, do not think that with the new iPhone to the beach to swim a little problem.
The iPhone 8 series and iPhone X phones use a rubber gasket to seal the inside of the device, but their IP levels will change over time. Most importantly, if your iPhone 8, iPhone 8 Plus or iPhone X framework or shell structure has been any impact, the IP level will be affected.
Finally, although three new iPhones are being promoted as a waterproof device, Apple does not provide warranty service if any liquid is damaged.