Where is the warranty certificate for my Nintendo Switch 2?

Hi ​@BurakT, the warranty certificate is usually printed on the back of the shipping label on the box.

If it's not there or you have any other questions about the welcome gift you can contact our partner:

Hi Thomas, I received the box with an envelope sticked by two sticker inside the box and that envelope only had the letter no certificate. 

I will check with them but do you mean in the box or on the box (outside)?

on the outside box, in the plastic compartment with the shipping label

Unfortunately there is no plastic compartment on the box, only a sticker for the parcel with KPN as sender and me as receiver (address details). I think calling them is the only option then?

Yes, I think that's the best course of action. Can you let us know how this turns out?

Hier hetzelfde. Wel een brief van KPN maar geen garantiebewijs.

EDIT: Zojuist telefonisch contact gehad met Sidekix, zij geven aan dat de brief als garantiebewijs geldt richting Nintendo, dit is niet duidelijk op te maken uit de meegeleverde brief of uit de automatische mail vanuit KPN, in de mail staat dat er naast de brief nog een apart garantiebewijs aanwezig zou zijn maar dit schijnt dus niet zo te zijn. De brief zelf is dus het garantiebewijs, aldus Sidekix.  

That really doesn’t make much sense to me. That letter is very generic and has no information with the serial number etc. of the device I received. Indeed the e-mail says there should be a certificate and emphasises on to keep it safe there isn’t one. The letter is only about how to contact Nintendo. For instance if I give this to someone else, there is nothing for them to prove the warranty. 

Tip: When I called KPN I was told that I might need to get in touch with Nintendo and maybe register with them so I doubt that the customer service on the phone from Sidekix might be tripping. I will give them a call anyways.

Zelfde hier. Alleen een brief van KPN maar geen garantiebewijs. Ook alleen een sticker label op de doos.