Can at&t see my internet history if I'm using Wi-Fi?

So I want to watch videos on my phone but I don't know If my parents can see that on my iphone. Can they see it on the AT&T website or on the bill? I'm using Wi-Fi, not 3g internet

Maybe.AT&T logs the activity of all of their customers. That way, the cops can request the information if you become a suspect. But your parents can tell if they look at the activity log that your router creates. If they are smart enough, they will configure the router to e-mail them the log and see which websites connected to the router.

If I were you, I'd find out the router password and learn everything you can about the router and make sure it isn't keeping a log. If you can manage it, talk your parents into letting you set up the router "so it runs faster", then change the password so only you can configure the router or view the log.