Blablub No, I understood the original point. My point was that a competent border officer would not be fooled by such a thing, as the thing you want your phone to be appearing to do does not exist.
To be frank, I believe for the vast majority of people and localities, this is a non-problem. But for those where it is an issue, your only solution truly is to not take your phone with you. Or, take a wiped version and have to back it up wherever you go.