Most premium smartphones claim to be waterproof. Take for instance, all the latest iPhone and Galaxy handsets. Convinced by the ads, a friend of mine bought the Galaxy S8, which is said to be waterproof. To his surprise, the phone stopped working a few weeks after the monsoons. It was followed by a rude awakening from Samsung making it clear that the company’s warranty policy does not cover water damage. Not just Samsung, almost every other smartphone brand including Apple, Sony LG, and Motorola wash their hands of water damage (get it?). I’m sure many of you are wondering how these waterproof phones get damaged by water to begin with. The short answer is that IP (Ingress Protection) ratings are mostly misunderstood. Most people make a wrong assumption that higher IP ratings mean better waterproofing. But in reality, these ratings are far more complex. To truly understand what your device can withstand, here’s a what you need to know: Ingress Protection refers to a device’s ability to stop foreign objects from entering the assembly. These ratings are mostly denoted by numbers such as IP56, IP57, or IP68. First digit represents a device’s effectiveness against the entry of solid ...