LifeProof Case, not as inexpensive as a Ziplock bag, but is not only completely waterproof, but provides excellent protection from drops and damage to the glass. Recently I was stopped at a light on my bike and while taking a drink of water, I dropped my water bottle. When I leaned over to pick it up my phone fell out of my back pocket, without any damage. The phone would definitely not have faired so well unprotected. In the last week a couple of co-workers have had to replace their phones because of water submersion and drops. As expensive as these phones are, I fail to understand why more people, especially active people do not have a protective case, it seems like cheap insurance.