Talk:Evolution Items/@comment-26689065-20190920075855

"Pokémon capable of holding either a Sun Stone or Up-Grade will evolve when leveled-up."

This is untrue, pokemon that evolve via the Sun Stone will do so upon "using" it on the pokemon, not while it is held, while pokemon that evolve via Up-Grade (only Porygon) will do so upon trading while holding it.