That's when you are able to trade. You need to get your first gym badge to be able to trade. Idiot TROLLfreak, for whatever reason other than to troll as usual, changed it so you can't immediately trade with other games from the same generation UNTIL you get your first gym badge. That's when you get your C-Gear options, which are the games' wireless communications structure for which to trade, battle, etc.
Fanboys, especially Nintendo fanboys, are what's horribly WRONG with the video game industry.