VS your answer is a little wrong its different for platinum
To get the Mystery Gift in Pokemon Platinum, follow these steps:
- Go to the Jubilife TV Station in Jubilife City
- Go to the 3rd floor.
- Talk to the man in the lower room (the guy on the left)
- The first two words you tell him are "everyone" and "happy"
- The second two words you tell him are "Wi-Fi" and "Connection."
- Finally, you will be able to access Mystery Gift in the Main Menu.
At Jubilife TV, there is a man that will ask for your opinion on tv. For the first 2 words, say EVERYONE and HAPPY. For the last 2 words, say WIFI and CONNECTION.