When you enter Mystery Gift and go to Receive the Gift, you will be presented with four different options on how to proceed. These are all used in order to retrieve various events and the methods used depends on the location and type of the event. Unlike the DS and 3DS games, there are no Wireless or InfaRed options to receive gifts.
Get via Internet
Get from Internet is one of the more commonly used features. From time to time, various events will be held online to celebrate various things such as anniversaries or product releases. This feature allows for you to get the event distribution from home.
Get via Code/Password
This way is another which requires the Internet. Various distributions will be given where you will get a Serial Code. This Serial Code can only be used once and needs to be entered into the form to be received. There are also special Codes which are shared by all players so they can use the same code to receive the Pokémon being distributed.
Get with a Poké Ball Plus
This feature only appears when you have connected a Poké Ball Plus. If your Poké Ball Plus still has the special gift inside it, the game will connect to the Internet to download the Wonder Card and then remove the gift from the Poké Ball Plus