how to evolve eevee to umbreon in pokemon go?
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Walk with your Eevee Buddy for at least 10 KM and until you get two at least Eevee candy. (You need to have gotten two candy for this to work.) While that Eevee is still your Buddy, hit the Evolve button during the day (game screen in bright) to get Espeon, or at night (game screen is dark) to get Umbreon.
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If you walk 10km with Eevee as your buddy and evolve it during the day, you get an Espeon. Do the same but evolve it at night and you get an Umbreon. Glaceon and Leafeon also have special lures that you can use to guarantee evolution if you're standing by them.
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Umbreon and Espeon both evolve after walking with the Eevee as your buddy Pokémon for 10 kilometers. Once that's done, the buddy Eevee evolved during the night will yield Umbreon while the day will yield Espeon. Note that when you evolve Eevee, it still needs to be your buddy Pokémon for this trick to work.
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You can only obtain Generation I Pokemon (and Meltan and Melmetal) in the game, and the developers went to great lengths to make those evolutions that got tacked on later unavailable. So, in short - you cannot obtain Umbreon whatsoever in Let's Go.
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Thus, the process of evolving an Eevee into Espeon or Umbreon usually involves trying to raise its happiness above 220 and then simply leveling it up at the right time. It does not matter when you raise Eevee's happiness; only the time of that final level-up matters.
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Level your Eevee between 8:00 PM and 4:00 AM. After your Eevee has a high friendship level, you will want to battle with your Eevee for it to level at least once. After leveling in the night time(8:00 PM - 4:00 AM), Eevee will evolve into Umbreon.
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To evolve eevee into umbreon in pokemon sun and moon you will need something called happiness. Happiness is increased by level up and by walking around with eevee in the front of your party in the overworld.
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Umbreon Location in Pokemon Sword & Shield: You can find Umbreon in the following locations: Obtained by evolving Eevee at nighttime when its Happiness value is at 220 (play with it at camp, cook curry). Beware, leveling up Eevee at day will evolve it into Espeon and would cancel out Umbreon.
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You need to walk 10km and collect 2 candies with the Eevee you want to evolve as your Buddy. The Eevee you want to evolve must be set as your current Buddy during evolution. Evolving the Eevee during the day will turn it into an Espeon. Evolving the Eevee at night will turn it into an Umbreon.
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['Eevee evolves into Umbreon with a high friendship level.', 'Galarian Linoone evolves into Obstagoon at Level 35.', 'Sneasel evolves into Weavile while holding the Razor Claw.', 'Snom evolves into Frosmoth with a high friendship level.']
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Umbreon (Dark): You can evolve Eevee into Umbreon by using a Friendship Ribbon which can be obtained by any PokeShop NPCs, in the Evolution Items section. Use the Friendship Ribbon only in the Nighttime. The Friendship Ribbon can be purchased for $20,000.
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To get Umbreon or Espeon, you need to raise your Buddy Pokémon's Friendship level: Make the Eevee you want to evolve your Buddy. Walk with your Eevee Buddy for at least 10 KM and until you get two at least Eevee candy. (You need to have gotten two candy for this to work.)
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You need to level eevee up at night time with full happiness then it evolves to umbreon.
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The best time to evolve Eevee is just when you get it, in Celadon Department Store buy a Water/Thunder/Fire Stone and to evolve it right away. To get Umbreon or Espeon, a good way to evolve him earlier is to give him 10 Proteins and other things like this and it will be an Umbreon/Espeon level 26.
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(You need to have gotten two candy for this to work.) While that Eevee is still your Buddy, hit the Evolve button during the day (game screen in bright) to get Espeon, or at night (game screen is dark) to get Umbreon.
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Gen 4's Leafeon and Glaceon have a second Eevee evolution method, by using the Mossy Lure or Glacial Lure respectively. When you're in range of that PokéStop with the Lure enabled, go to your Eevee and choose the Evolution. Meanwhile, Gen 2's Umbreon and Espeon also have a second Eevee evolution method.
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Tips and Tricks for Eevee's Evolutions in Pokemon Go There is a secret that lets you determine your Eevee's fate. You can choose which evolution form to evolve your Eevee into by naming it Sakura (Espeon), Tamao (Umbreon), Pyro (Flareon), Rainer (Vaporeon) or Sparky (Jolteon).