Today, the primary causes of premature “death” for smartphones are usually cracked screens and water damage. While cracked screens can be easily addressed with a protective case or screen insurance, water damage requires built-in hardware support, improving internal structures to provide a certain level of water resistance.
You might have noticed that even if you manage to dry your phone after it’s been exposed to water—by powering it off and putting it in rice (or some other drying agent)—it often works fine initially. However, after some time, problems like failure to power on or frequent freezing might still arise.
The reason for this is simple: water seeps into the phone through small gaps and cracks. Even if you successfully dry the phone at first, any remaining moisture inside can lead to corrosion and rusting of the internal circuit components. This ongoing damage may not immediately cause failure, but over time, it can lead to short circuits and, ultimately, total phone breakdown. That’s why I always advise friends who’ve accidentally exposed their phones to water to back up their data immediately. Just because the phone seems to be working again doesn’t mean it won’t fail later.
We know that electronic devices are rated for water resistance from IPX1 to IPX8. For smartphones, achieving a higher waterproof rating requires significantly more investment and cost.
Why?
To reach higher water resistance ratings (IPX6 and above), a phone needs to employ a variety of manufacturing processes, as different parts of the phone require different water resistance methods.
For example, the microphone and earpiece need to allow sound transmission but prevent water from entering. This requires a special process that allows only air molecules through while blocking water molecules. For ports and gaps, silicone rubber (seals and gaskets) and waterproof adhesives are used. The internal circuit board also requires a waterproofing treatment, typically achieved with nano-coating materials.
Take the Samsung Galaxy S7 as an example, which has an IPX8 rating. This phone uses silicone seals on the MIC holes, headphone jacks, side buttons, SIM card trays, and USB ports, ensuring tight connections with the device’s housing. The cover lens and rear cover also use foam seals. To ensure that the rubber seals remain intact despite temperature fluctuations, pressure, and internal stress (such as when plugging in headphones), the internal structure needs to be precisely optimized. As you can imagine, such high-level waterproof phones are far from inexpensive.
Here’s the problem: for most ordinary consumers (like myself, a “waterproof novice”), there is no need for extreme waterproofing. We don’t take our phones diving into the ocean. What we need is a phone that can withstand sudden rain, a spilled drink, or a fall into a sink.
In other words, we don’t need an IPX6, 7, or 8 rating. For everyday use, achieving an IPX3, 4, or 5 rating is sufficient.
So, how can we give our phones this level of water resistance without breaking the bank?
Good news—there is a relatively affordable solution: Nano Waterproof Coating.
Nano waterproof coating technology involves applying a thin, invisible nano-coating to the surface of electronic devices. This coating prevents water from penetrating the internal components, protecting the phone’s delicate circuits and prolonging its lifespan.
The advantages of nano coatings are clear:
In conclusion, nano waterproof coating provides a cost-effective, simple, and efficient solution for water protection, giving consumers the peace of mind that their phone can withstand everyday moisture without the need for expensive, high-end waterproof technology.
