Go to route 106 or 124 and find underwater yellow red and blue shards.
Eevee to umbreon alpha sapphire.
Try taking it to massage in mauville city walking adds to happiness as well and.
Source so you need to first make sure you re doing this in sapphire not leafgreen.
It ll evolve automatically upon leveling it up once you have a high enough happiness value from doing the tricks mentioned above if it s daytime it ll be espeon if nighttime it will be umbreon.
Name type category ev yield umbreon.
Amie happiness and the other happiness needed for eevee to evolve into espeon or umbreon are two separate things.
To raise eevee s friendship you should give it a soothe bell.
Then go to the house you land by on route 124 and trade with the guy in the back.
If you give him the red shard you will get fire stone the blue shard will get you water stone and the yellow shard will get you thunder stone.
Then feed it 22 ev berries or 36 vitamins costs 352 800 and level it up at night.