A waterproof test carried out by YouTuber Zach Straley shows the iPhone 6s and iPhone 6s Plus survive an hour submerged under water. However, Straley's test on the iPhones has not been verified. Also, Apple has never claimed that its latest iPhones were waterproof or even water-resistant.

In the video, after the phones are submerged in two sets of bowls containing water, the YouTuber is seen picking up the phones several times to check if they are still running. After an hour, the phones are taken out of the bowls and dried off to be examined in detail for damages. However, the YouTuber could not find any damage. The home buttons, power buttons, cameras, speakers and 3D Touch were found to work smoothly on both the phones. Also, no water spots could be found latched to the screens of the phones. However, Straley's video does not mention whether the lightning port and headphone jack still worked.

Recently, a YouTuber by the name of Keaton Keller, who runs TechSmartt channel, carried out a drop test on the new iPhones to find out the new iPhones' toughness. The new phones were dropped from three different heights: pocket height, six feet and 10 feet. When the phones were dropped from a height of 10 feet, the display of iPhone 6s shattered, while that of iPhone 6s Plus stood the impact of the drop. For the new iPhones' toughness credit should be given to their new aluminium casing, said the YouTuber.

The phones went on sale on 25 September. The phones are available in Australia, Canada, China, France, Germany, Hong Kong, Japan, New Zealand, Puerto Rico, Singapore, the UK and the US.