20 minutes ago, JoNorvelleWalker said:Aren't the current iPhones water resistant?
I should hope so! Many modern cell phones carry an IP rating indicating how waterproof they are. I can give my Samsung a bath with no ill effect. Anyway the phone used doesn't have to be an iPhone. There are other (and dare I say better) brands
I'd have thought the power of the vibration more of an issue. Only one way to find out. Try it.