I have 500 dollars and I am trying to see how much I can do with it by trading (short-term) and the only problem is that in order for my account to profit I need the lowest possible over head broker and a broker that has a mobile platform I was thinking ib but since I'm only starting with 500 I can't open an account since there minimum balance is 3500 I think? By the way I'm 17 so I still need a custodi account if that matters... Suggestions are much appreciated