In Pokémon Ultra Sun and Ultra Moon, you can use the QR Scanner, one of the functions of the Rotom Dex, to scan in QR Code patterns that you find around you. The Pokémon corresponding to each QR Code will be displayed, and you’ll be able to see some of the information about that Pokémon.
When you scan in QR Code patterns with the QR Scanner, your Rotom Dex will store up points. Once you have 100 points, you’ll be able to use the Rotom Dex’s Island Scan function. Then you can use Island Scan to scan the island you’re currently on and find rare Pokémon you would normally never encounter in the Alola region. Pokémon Ultra Sun and Pokémon Ultra Moon feature encounters with Pokémon that didn’t appear in Pokémon Sun or Pokémon Moon. You can meet Charmander, Grovyle, Greninja, and others.
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