I still love the iPhone 7 plus. It is my daily routine to check my email in the bath every morning, but I have dropped it in the bath twice so far. I really fell. With Dobon. But it works as if nothing had happened. The waterproof specifications of the product are wonderful! So, this time I checked about waterproofing.
The IP (International Protection) indicates the degree of protection against foreign matter, dust and water in the enclosure of electrical machinery and equipment.
IP ○ △
When displaying
○ is the first symbol, “Protection against human body and solid foreign matter”
△ is the second symbol, which means “protection against ingress of water”.
The grades of each symbol are as follows.
Explanation of the first symbol
Protection against human body and solid foreign matter
| symbol | Description | Degree of protection |
| 0 | Unprotected | Not particularly protected. |
| 1 | Protection against solids larger than 50 mm | There is no risk that a large surface area of the human body, such as a hand, will accidentally come into contact with the internal charging or moving parts. Solid objects with a diameter of more than 50 mm do not enter inside. |
| 2 | Protection against solids larger than 12 mm | There is no risk of fingertips or fingertip analogs with a length not exceeding 80 mm coming into contact with the internal charging or moving parts. Solids with a diameter of more than 12 mm do not enter inside. |
| 3 | Protection against solids larger than 2.5 mm | The tips of solid objects such as tools and wires with a diameter or thickness exceeding 2.5 mm do not penetrate inside. |
| 4 | Protection against solids larger than 1.0 mm | Wires with a diameter or thickness of more than 1.0 mm do not allow the tips of solid objects such as copper strips to penetrate inside. |
| 5 | Dustproof type | Prevents dust from entering the interior. Even if there is some dust intrusion, it does not interfere with normal operation. |
| 6 | Dust resistant type | Dust does not enter inside. |
Explanation of the second symbol
Protection against water ingress
| symbol | Description | Degree of protection |
| 0 | Unprotected | Not particularly protected. |
| 1 | Protection against dripping water | Not harmfully affected by vertically falling water droplets. |
| 2 | Protection against falling water when tilted 15 ° | When tilted within 15 ° from the normal mounting position, it will not be adversely affected by water droplets that fall vertically. |
| 3 | Protection against spray water | It is not adversely affected by water falling into the spray water within 60 ° of the vertical. |
| 4 | Protection against splashes | It is not adversely affected by water droplets from any direction. |
| 5 | Protection against jet water | Direct jets of water from any direction are not harmfully affected. |
| 6 | Protection against waves | It is not adversely affected by waves or strong direct jets of water from any direction. |
| 7 | Protection against immersion in water | Even if it is immersed in water for the specified pressure and time, it will not be adversely affected. |
| 8 | Protection against submersion | Suitable for continuous submersion according to the conditions specified by the manufacturer. As a general rule, it has a completely sealed structure. |
If the protection class is less than 3rd grade, it will be “drip-proof” rather than waterproof.
When it comes to waterproofing, it means grade 3 or higher.
“Life waterproof” and “complete waterproof” are not clarified in the standard, but it is a guideline to call “less than 4th grade” life waterproof and “5th grade or higher” completely waterproof, but it depends on the manufacturer. It may be.
iPhone 7 plus is “IP67” according to the IEC international standard. As for the waterproof performance, it means that there is no problem even if it is immersed in water for 30 minutes at a depth of 1 m . But if you drop it in the bath, you’ll pick it up in a hurry! ..
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