After the mobile phone is put into the waterproof bag, try to remove the air in the bag so that the mobile phone screen and the waterproof bag film are in contact as much as possible, and the touch screen is more sensitive.
put a dry paper towel in the bag, completely seal the waterproof bag, completely immerse the bag in water, press a certain weight to prevent the bag from floating, remove it after 30 minutes, and wipe it before opening the bag Dry the bag, take out the paper towel to check, if the paper towel is soaked, please contact customer service.