YouTube channel EverythingApplePro has made a wildly popular video (over 1.5 million views) showing just how waterproof the newest iPhone and Samsung Galaxy S phone are. The results are incredible, with both phones surpassing their IPX7 (iPhone 7) and IPX8 ratings. The two phones are put into a hole-riddled paint can, then lowered into the Columbia River for 5 minutes at various depths.
If you don't want to watch it all the way through, the iPhone 7 did survive at 35 feet (10m) for 5 minutes, although it had a bit of water damage. The Galaxy S7 did not survive.