A:AnswerMake sure you’re using the pamphlet from the original product. If you have to, take the back cover off and it will have a barcode you can scan under it for registration.
A:AnswerThis version is just the console itself. There are different versions which come as a package. (IE: Legend of Zelda tears of kingdom package)
There are a few free apps you can download from Nintendo E Store. But you should know a Nintendo online account could really unlock the potential of the device.
A:AnswerUp to 2TB.
Make sure you check the read and write speeds of the card - the Switch can only go so fast, so don't go tossing your wallet out the window for a card that has a super fast read / write speed.
A:AnswerI don’t see COD mobile but I know Fortnite is on there. You can connect your Fortnite account to your switch. I have my PlayStation account for Fortnite in my switch.