Okay, I am on t-mobile and want to use an iPhone my friend gave to me (yes it is unlocked). My mother pays for the family plan of 3000 minutes and unlimited texting. She also pays for internet plans on me and my brother's phones. My brother has to pay like $20 for internet because he has an android, I just pay the $10 unlimited internet plan that you can get with any "dumb phone" (I have the LG Sentio). So would I have to pay for the smartphone Internet plan because I am going to use an iPhone? Or would I just keep using my standard phone internet plan? Also, will my mother get any extra fees for some crazy reason? Thanks!