IP68 should mean that a phone with this standard is protected against dust and water to some great extent, I can understand this when it's talking about the camera and the body of the phone because it's already protected by glass and well assembled and sealed but how about the ports? e.g. port for charging, I can see some dark area within the lightning charging port so I think there is passage from the surrounding to the inner of the phone. In that case, how is it against water or dust to such a great extent as advertised? Just wondering. I know I must lack some knowledge or understand it incorrectly...