Samsung Galaxy S5 Water Test Waterproof for how long?

Samsung Galaxy S5 Water test, how long can it last under water for? IP67 rating is only for 30 minutes but ours lasts for ....? Is it waterproof or water resistant? Get Galaxy S5 in the USA: Get Galaxy S5 in the UK: Samsung Galaxy S5 Unboxing WHITE: Samsung Galaxy S5 Unboxing BLACK: Sony Xperia Z2 Unboxing: HTC ONE M8 2014 UNboxing: ===