You'll have an hour to catch the Pokémon, starting from when you use Island Scan. Go to the location within the next hour and attempt to catch it.This will then show you the Pokémon available that day, and its location.At the bottom you'll see the 'Island Scan' option.Head to the Scanner option in your menu, as you would for the QR Scanner.

How to use Island Scan in Pokémon Ultra Sun and Ultra Moon:

Island Scan will reveal one of a selection of non-Alolan Pokémon on your current island for you to catch (the full details of which for Ultra Sun and Moon are at the end of this article). Pokémon Ultra Sun and Ultra Moon Island Scan explained For every scan, you earn 10 points, and every 100 points allows you to then use the Island Scan feature, which we explain next. The catch is that you can only use the QR scanner 10 times a day. This'll show which island and subsequently which location on that island you'll be able to find it. To find that Pokémon's location in-game, head to its page in the Pokédex, and then to the Habitat tab. The camera will activate - place the desired QR code in front of it and snap a picture of the code with the R button.Head to the second page and select the 'QR Scanner' option.Volcarona, for instance, is only available to catch by SOS encounters with Larvesta in Lush Jungle, so it'll be marked on your map accordingly. It's not a way to instantly catch Pokémon, then - but 'seen' Pokémon that are available to catch in-game, via regular methods or SOS-chaining, do have their location marked on your map. Every Pokémon available in the Alolan Pokédex has it's own QR code - you can access it yourself if you've caught the Pokémon by heading to it's page in the Pokédex and pressing X - and scanning a Pokémon's QR Code with the QR Scanner will add that Pokémon to your Pokédex as 'seen'.

The QR Scanner uses your 3DS's camera functionality to scan an actual, real-world QR Code. They are different, albeit related, functions, so we'll explain them separately here: Originally introduced in regular Pokémon Sun and Moon, Island Scan and QR codes are a simple way to acquire Pokémon in-game (especially if you're prone to Slaking, geddit?). How QR codes work in Pokémon Ultra Sun and Ultra Moon There are a few caveats to the system - and it will take you some time to scan then all - but below we explain everything you need to know about Island Scan and Gen 7's QR code functionality. Ultra Sun and Ultra Moon's Island Scan feature works similarly, unlocking after you use the regular QR Scanner a certain number of times, only this one allows you to find and actually catch Pokémon in-game. Pokémon Ultra Sun and Ultra Moon QR codes are by far the easiest way to fill out the 'seen' aspect of your Alolan Pokédex, granting you the ability to simply scan a code - we have a full list below - and register that Pokémon as 'seen' there and then.

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