Yesterday, on Weibo, a fruit powder king from Hangzhou bought an Apple's latest iPhone XS Max. After the movement, he saw that the phone case has stains. I think the iPhone XS Max supports IP68 waterproof, so I use water. I rinsed my phone. I didn't expect the phone to break directly after entering the water.
When Mr. Wang got the official flagship store repair, the after-sales statement said that this waterproof is not completely waterproof, but that the waterproof has reached this level. And Mr. Wang’s mobile phone water is caused by human factors, so it is not Within the scope of the warranty. So what is the so-called 'IP68' here, let's talk about the waterproofing of mobile phones today.
What exactly is 'IP68'?
In Apple's official website for the introduction of the iPhone XS series, it is very clear that the iPhone XS has the effect of splash-proof, water-resistant and dust-proof: IP68 level under the IEC 60529 standard (the longest dwell time at the deepest 2 meters) Up to 30 minutes). Among them, the IEC (International Electrotechnical Commission) is a worldwide standardization organization. It is an international standardization organization, that is, the electrical department in ISO that we often hear about, mainly to solve the safety of electricity and electricians. Product standardization issues. IEC 60529 here is the standard for the protection level of electrical products.
IP is the Ingress Protection Rating, while the latter 6 and 8 are the levels of different protection features. The first number refers to the protection of external solid objects, such as dust and other particles. The second number indicates The level of protective water; the specific level of the corresponding level of protection can be seen by the author's form.
The 68 of IP68 is connected: The iPhone XS series can achieve dust tightness (ie, the highest level), and at least the test should ensure that the phone is continuously immersed in water of more than 1 meter for more than 30 minutes, and the phone will not be in trouble. And Apple's official 2 meters water depth of 30 minutes, has fully achieved IPX8 level of waterproof.
Since the iPhone XS series does achieve IP68 dust and water resistance, why is the phone still washed out?
There is also a line in Apple's official iPhone waterproof feature: iPhone XS and iPhone XS Max are splash-proof, water-resistant, dust-proof, tested under controlled laboratory conditions, and have an IP68 rating under IEC 60529 ( The maximum residence time can be up to 30 minutes at the deepest 2 meters.) Splash, water and dust are not permanently effective. Protective performance may be reduced due to daily wear and tear. Damage due to immersion in liquid is not covered by warranty. Within the scope.
Note that here, IP68 is the result of testing under the 'controlled conditions' of the laboratory. For example, in the water spray test, the inner diameter of the nozzle for spraying water to the mobile phone, the water flow speed, the water pressure, the distance from the nozzle to the surface of the casing, and even the test. There is a clear data requirement for the temperature difference between the water temperature and the phone. And this Mr. Wang, or our ordinary users in daily life, certainly can't control the variables as accurately as in the laboratory. Therefore, it has certain risk behaviors, triggering certain scenes, or violating experimental conditions. , may cause accidents in the phone.
In addition, here is a common scenario to be told: Don't be okay with your mobile phone to swim without protection. Even the sea. First, the water pressure in the swimming pool or the sea must be higher than the water pressure in a small pool in the laboratory. The waterproof structure of the mobile phone may not be able to withstand. So big water pressure; second, there are some chemical components in the swimming pool, such as disinfectant, the sea water is very corrosive, it will corrode the coating that protects the motherboard or interface, resulting in waterproof failure.
How is waterproof phone made?
Early smartphones, want to achieve the waterproof effect, due to technical limitations, so can only use a more rude treatment: a variety of USB ports, headphones, etc. Live. In some gaps and interfaces inside the fuselage, such as the headphone jack, power button, SIM card holder is wrapped with rubber to ensure that the liquid will not enter the phone as much as possible. And in the position of the motherboard, some waterproof Glue blocks liquid.
In today's smartphones, due to advances in technology, most of the time rely on waterproof glue, and the internal motherboard uses a waterproof coating that acts like a waterproof coating on the jacket. And in the design of the motherboard, rely on some assistance. With the help of materials, it is also possible to maximize waterproofing. With the advancement of technology, it is now available in various waterproof functions without sacrificing design.
to sum up:
Today's flagship-class smartphones mostly support certain waterproof functions. Some are called 'life waterproof', that is, they only support daily splash prevention, such as drinking water or washing hands, accidentally spilling water on the phone. Slight scenes. At the extreme, through the IP certification we mentioned earlier, we can achieve a certain level of waterproofing, and there is evidence to follow. But no matter what, mobile phone manufacturers design this function, in order to let users in the accident More protection, and not to encourage users to commit crimes. There is a saying on the Internet, although the words are justified: mobile phone waterproof splash, not handcuffs.