In Pokémon: Sun/Moon, how to evolve Pokémon Rotom can be referenced as follows:
Rotom in Pokémon Sun and Moon cannot evolve, but it can change its form.
Rotom can access different appliances in places such as Rotom's room, and can also specify appliances for Rotom by using the Rotom Catalog. In Generation IV, only one Rotom can enter an appliance, and it will leave the appliance when it is placed in a breeding house or brought into a location used for connection exchange. After the fifth generation, multiple Rotoms that have entered the appliance can exist in the same version of the game at the same time. The method of leaving the appliance is the same as attaching to the appliance.
The Pokémon Rotom's attributes are electric and flying. Although it can damage insect, fighting and grass-type Pokémon, it is also restrained by the ground-type. Although rotating Rotom can learn skills such as air cutting in the game, there is not much need for players to cultivate it. After all, heating and cleaning Rotom in the game will be more practical. Rotom will also sneak into various equipment to form various special devices to help the protagonist complete the adventure.