Explanations for Infractions?

Hello all. I've been around this forum for awhile now but I still have to say I don't quite get a lot of the terminology here. I mean, I have been getting infractions lately and I have no idea what for. It's been the phone on a rock infraction. I've gotten it twice, have not received any explanation for what that means, and I am starting to think that it is a made up excuse to inevitably ban me. I really don't think that it's fair, especially because I'd gladly stop doing whatever it is I'm doing if I could find out what that bad thing was. Anyone know what this infraction is all about so I can stop doing it?

Jam it back in, in the dark.