The water inspection method is to judge the sealing performance of the mobile phone by putting the mobile phone into the water immersion test chamber or rain test chamber to observe whether there are bubbles coming out. This method is simple and intuitive to operate, and the emergence of bubbles can be directly observed, but it has the disadvantage that it is only suitable for liquid environments, and its accuracy is average, and it cannot provide accurate quantitative measurement results

The pressure attenuation method (pressure drop method) is to make a waterproof testing mold that matches the mobile phone and connect it to the test port of the mobile phone waterproof testing machine equipmentThen put the phone into the test fixture, and set the test pressure and test timeDuring the test, the pressure sensor of the mobile phone air tightness detection device will record the current pressure value in real timeBy comparing the pressure difference between the initial pressure and the real-time pressure, you can determine whether there is a leak in the mobile phoneThis method is suitable for the air tightness detection of different media, and can provide relatively accurate results, but it requires air source devices and tooling fixtures, and the equipment cost is high
In general, the smartphone airtightness and waterproof testing test is a complex and important process, and it is necessary to choose the appropriate test method and equipment to ensure the accuracy and reliability of the test
In order to ensure the waterproof performance of mobile phones, air tightness testing equipment plays a vital role. Through Huber&Ranner's non-standard air tightness test equipment, the mobile phone can be inflated, stabilized and tested in a short time, so as to accurately measure the air leakage rate. Based on the upper limit of the leakage rate, you can accurately determine whether the waterproof level of the mobile phone meets the standard. This efficient and accurate detection method greatly improves the waterproof pass rate of mobile phone production.