Phone Cases - I Don't Know Where My Idea Is

If there was a way to put my idea on my phone and have it be accepted widely, i would be happy to do that. Basically, everywhere i go my phone works. If if they i also like getting on the train the subway, use your phone. I don't have a reason for my wallet, except for the fact that places still need your idea, right? Actually, i remember this like being a questioned back at college humor, like in two thousand five it was ike, would you rather lose your phone, your wallet or your computer?