I'm going to close my bedroom door and not give up my phone even though my parents want me to.
Is there any reason you're going to do that?
They want me to concentrate on my homework but I want to at least check it once in awhile.
If your parents want you to give up your phone and keep your bedroom door open then you should do it. Following rules that your parents set for you, especially when they're completely reasonable, is expected behavior. I think they're just trying to do what's best for you.
They're trying to control me, but I don't care.
It;s not controlling. It's their house and their rules. If you don't like it you can always move out when you're 18.