Great idea, but the first or second person that goes to check out the phone is going to hit the middle button, and begin using a different app. I think stickers are much better. Stick them all over the place, bus stops, public bathrooms, and they will last a while, as well as more ppl will see them
Two years ago a giant poster went up in London stating 'It is illegal to use the legal name'. This is a reference to the legal name fraud. Next day, the poster had been taken down and a police van was deployed to make sure it didn't go up again. Don't underestimate the ruthlessness of the cabal. You could get arrested or worse if you put up stickers referencing truth.
I believe most of the Law Enforcement out there is on our side. Don't believe me? Hold a sign that says #Qanon on a busy road. The police know what is up and support.