First evidence of porn (12 year old boy) left us wondering if we handled the situation correctly and if anything more needs to be done.

I posted this on a private sub but want to see what a wider audience thinks.My 17 year old is either great at being sneaky or doesn't watch porn because I never found any evidence of porn on any of her devices. She has admitted to seeing it but thought it was gross so never watched again.We got the 12 year old a smartphone this year. Our rule is that they get a dumb phone for 5th and 6th grade and can level up to a basic smartphone in 7th grade. They start walking to school in 5th grade because of the location of the middle school and I like being able to have that line of contact. My 12 year old has ADHD and loses everything but managed to keep his phone on him for all of 5th and 6th grade so we kept our promise and got him a smartphone, which has been nice since he is able to set reminders for everything (sports, homework, cello, etc.).Over the weekend I discovered pornography on his phone. Well, more accurately he showed me pornography on his phone. He admitted that he was looking for pictures of boobs. He stumbled across a porn site, got curious, and ended up clicking on a video that was a little too much. His phone wouldn't allow him to exit the screen and he didn't know what to do so he came to us. We told him that we were glad he came to us, understand that he is curious about girls, and talked about how pornography isn't real. He asked some questions (Why do people do porn? Is it okay to watch porn? Are penises really supposed to look like that?) and we tried to answer him the best we could, though two lesbians really struggled with the penis questions and told him that he could talk to a guy (my brother) if he felt more comfortable discussing it with a male. He said he was fine talking to us but might want to ask his uncle some questions in the future and I told him I would let my brother know if there were any questions he needed answered that he couldn't or didn't want to ask us.I'm not really sure where to go from here or if we handled this right. We have 3 more kids behind him so I am sure this will come up again. He shares a room with his 11 year old brother but the 11 year old seems to be a late bloomer and doesn't appear to be interested in girls (or boys) yet. How did you guys handle it? via /r/Parenting https://ift.tt/2qpjdm0