This game is an arcade game. yes, it plays with digital cards, maybe gameplay like "Key of Avalon", but this is not a mobile phone game.
You know what "aime card" is? It's a card for saving player's data use with some arcade titles by Sega.
And you can check your aime card data through a mobile phone service, so you don't have to go to arcade just for check some data.
"Code of Joker" supports using "aime card" to saving data, that's why you can see the word "携帯電話"(mobile phone) in the Famitsu report.
Anyway, I don't know what game "Code of Joker" will be. But I think it will not to be like shitty mobage or gree card games.
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Sorry for my poor English, I'm not a native English speaker.