Samsung Galaxy S5 is said to sport IP67 certification meaning it can be submerged in 1m deep water for 30 minutes. Eldar Murtazin of Mobile-Review.com has gotten a review unit early, and he has put the waterproof part to test in the video above. He put the device to its limits by submerging it in a 1m deep water tank for exactly 30 minutes. While the device still works after 30 minutes, it still let some moisture through its shield. This could be bad in the long run as it could eventually cause corrosion inside the phone.