Splash Screen Question

Sorry if this has been asked but I didn't find an exact answer. If I have unity pro and the basic version of the iOS (not pro) can I remove the splash screen on iphones games or do I need both the iOS pro and Unity pro. I know unity pro can remove a splash screen but maybe this does not work for iphone games with the basic iOS. Thanks for any help.

You need iPhone Pro for that.

Could I develope with the regular iphone package and then if I like my game and want to remove the splash screen just upgrade later to iOS pro and Unity pro--any known issues with upgrading? I am trying to figure out the best way to see if I like my game before investing too much. Thanks for responding so fast before.