According to foreign media reports, more apple devices will get the same way as the apple watch to drain water through loudspeakers. At the same time, apple is developing technology to evaporate water by heating. Apple used silicone sealing to enhance the waterproof function of iPhone in 2015, and started to develop new sealing technology from 2018. In 2016, the second-generation Apple watch introduced drainage function for the first time. At the same time, apple is currently working on developing two new patents for active drainage function.

about the two patent, the solution of apple is to use gel cover to cover part of the device and to deploy electrodes around it. It can record the existence of water by measuring the dielectric constant between at least two electrodes, and at the same time, the intervention of heating elements will evaporate the water. The principle of this patent is different from the first one, which mainly depends on water removal rather than drainage. The patent is due to five major inventors, including Matthew a. donarski, who had previously worked on a patent related to loudspeaker diaphragm. Global Tech