HTC's latest Butterfly It has IP55 level protection, and Xperia Z L36h newly exposed by Sony It also has IP57 protection. Today, with the increasingly homogeneous hardware configuration in the Android camp, mobile phone manufacturers have begun to seek differentiation in other fields. What are these levels of protection? With these protections, can we use mobile phones to "act recklessly"? Now let me take you to learn about the IP protection level, so as to avoid hurting your mobile phone due to your wrong understanding of these protections in life.

IP (Ingress Protection) protection class system is drafted by IEC (INTERNATIONAL ELECTROTECHNICAL COMMISSION). The electrical appliances shall be graded according to their dust-proof and moisture proof characteristics. The foreign objects mentioned here include tools, and people's fingers should not touch the live parts in the appliance to avoid electric shock. The IP protection level is composed of two numbers. The first number indicates the level of dust separation and prevention of foreign intrusion of the lamp, and the second number indicates the degree of tightness of the lamp against moisture and water intrusion. The larger the number, the higher the protection level.

▲ Dust proof test laboratory

▲ IP dustproof grade

▲ IP waterproof grade

So we can see from the table that Butterfly5 dustproof does not completely prevent dust from entering, but it will not affect the normal operation of electronic devices after entering. So if you want your mobile phone not to enter dust, you should avoid using it in an environment with too much dust. And the level 5 waterproof can only resist the strength of the spray. If you put it into the water, it will also damage the phone components. Sony's Xperia Z 7 waterproof has a slightly higher resistance strength, which can ensure that the phone will not be damaged due to water immersion within a certain water pressure or time.

▲ HTC Butterfly waterproof test

Additional letters: prevent access to dangerous parts
A Back of hand
B Finger
C Tools
D Wire
Supplementary letter: special supplementary information
H High voltage equipment
M Sample operation during waterproof test
S The sample is still during waterproof test
W Climatic conditions

Waterproof test of various grades
⑴IPX 1
Method name: vertical drip test
Test equipment: drip test device
Sample placement: place the sample on the rotating sample table at 1r/min according to the normal working position of the sample, and the distance from the top of the sample to the drip port shall not be more than 200mm
Test conditions: water drop is 10.05 mm/min
Duration: 10 min
⑵IPX 2
Method name: inclined 15 ° drip test
Test equipment: drip test device
Sample placement: make one surface of the sample form a 15 ° angle with the vertical line, and the distance from the top of the sample to the drip mouth shall not be more than 200 mm. After each test, change another face for four times.
Test conditions: water drop is 30.5 mm/min
Duration: 4 × 2.5 min (10 min in total)
⑶IPX 3
Method name: water sprinkling test
Test method:
a。 Pendulum water spraying test
Test equipment: swing tube water sprinkling and splashing test device
Sample placement: select a swing tube with an appropriate radius to make the height of the sample table at the position of the diameter of the swing tube. Place the sample on the sample table so that the distance from its top to the sample spray nozzle is not more than 200 mm, and the sample table does not rotate.
Test conditions: the water flow is calculated according to the number of spray holes in the swing tube, and each hole is 0.07 L/min. When spraying water, the spray holes in the 60 ° arc segments on both sides of the swing tube midpoint spray water to the sample. The sample is placed in the center of the semicircle of the pendulum tube. The pendulum tube swings 60 ° along both sides of the vertical line, 120 ° in total. Each swing (2 × 120 °) is about 4s
Test time: continuous water spraying for 10 min
b。 Sprinkler type water spraying test
Test equipment: hand-held water sprinkling and splashing test device
Sample placement: make the parallel distance between the top of the test and the nozzle of the handheld nozzle between 300mm and 500mm
Test conditions: the baffle with balance weight shall be installed during the test, and the water flow is 10 L/min
Test time: 1 min per square meter (excluding the installation area), at least 5 min, calculated according to the surface area of the tested sample shell
⑷IPX 4
Method name: water splashing test
Test method:
a. Swing tube water splashing test
Test equipment and sample placement: the same as the above item a of IPX 3;
Test conditions: except for the following conditions, they are the same as the above IPX 3 clause a; The water spraying area is the water spraying from the water spraying holes in the 90 ° arc segments on both sides of the swing pipe midpoint to the sample. The sample is placed in the center of the semicircle of the pendulum tube. The pendulum tube swings 180 ° along both sides of the vertical line, about 360 ° in total. Each swing (2 × 360 °) is about 12s
Test time: the same as the above item a of IPX 3 (i.e. 10 min).
b. Sprinkler type water splashing test
Test equipment and sample placement: the same as the above item b of IPX 3;
Test conditions: remove the baffle with counterweight installed on the equipment, and the rest are the same as item b of IPX 3 above;
Test time: the same as the above item b of IPX 3, that is, 1 min per square meter (excluding the installation area) based on the surface area of the tested sample shell, at least 5 min
⑸IPX 5
Method name: water spray test
Test equipment: the inner diameter of the spray nozzle is 6.3mm
Test conditions: make the distance between the test sample and the spray nozzle 2.5 m~3 m, and the water flow 12.5 L/min (750 L/h)
Test time: 1 min per square meter (excluding the installation area), at least 3 min, calculated according to the surface area of the tested sample shell
⑹IPX 6
Method name: strong water spray test;
Test equipment: inner diameter of spray nozzle is 12.5 mm
Test conditions: make the distance between the test sample and the spray nozzle 2.5 m~3 m, and the water flow rate 100 L/min (6000 L/h)
Test time: 1 min per square meter (excluding the installation area), at least 3 min, calculated according to the surface area of the tested sample shell
⑺IPX 7
Method name: short-term immersion test
Test equipment and test conditions: immersion tank. The size shall be such that the distance from the bottom of the sample to the water surface is at least 1m after the sample is put into the immersion tank. The distance from the top of the sample to the water surface shall be at least 0.15m
Test time: 30 min
⑻IPX 8
Method name: continuous diving test;
Test equipment, test conditions and test time: the severity shall be higher than IPX 7, which shall be agreed by the supplier and buyer (the buyer and the seller).
Note: In addition, many outdoor electronic products also emphasize the floating ability.