People don't deserve to get nailed for sharing porn on their phones. Even if it's stupid, given how little privacy we have these days. Especially if they're young people who are the most vulnerable, and the least experienced, and whose porn is more likely to be the illegal kind, although they may not even realize it.
Child erotica (because let's be honest, it doesn't have to be pornographic) is once again the canary in the coal mine that'll send us hurtling down the mine shaft of human rights violations. There is no such thing as civil liberties until we (collectively as a population, not just pedos) grow a spine and stand up for the right of young people to be depicted in representative media expressing their God-given sexual freedoms that our government and society firmly strips them of.
But I fear it'll be a long, long time before that happens. If ever it does.