Is it normal that my friend is treating me like this

My best friend of three years has become a bitch. Don't get me wrong, I love her but I feel like the friendship is holding me back as a person. The problem is that she always treats me like shit when other people or my phone is involved. She has really strict parents that don't let her have social media or give her number out to certain people, so she's constantly using my phone. It's almost like she's only hanging out with me for my phone, she uses it without asking now and is always taking selfies instead of talking to me. When I confront her about it she just dismisses my suspicions and continues to use it. Not to mention that she tries to ruin my social rep by posting irrelevant things or things that make me look annoying (like bragging about how great my life is). But that's not all. In our friendship circle she always has to sit in the centre. She's always walking around amd everyone else mindlessly follows her to wherever she wants to go. Once I was in class with her and a mutual guy-friend of ours (who she sorta likes) and I was sitting between them and she MADE me move and sit at the end of the row by forcefully shoving her chair between us. This kind of stuff (and worse) happens all the time I'm becoming depressed. I used to be so confident and fun and now it just feels like I'm standing in her shadow. This has been going on for a year now and I don't know what to do! Please comment some advice below I need your help! (Ps she never listens when I try to talk to her and she gets really defensive and I end up having to apologise)