In the Pokemon Go Gen2, you can evolve Eevee into different forms, Espeon and Umbreon are also forms of Eevee. There is a trick introduced in the Gen2 Pokemon Go to evolve Eevee into Umbreon and Espeon after using the naming trick. The following guide provides all details you need to know on how to get Umbreon and Espeon after using the naming trick.
How to evolve Eevee into Umbreon and Espeon:
In order to evolve Eevee, go to Pokemon storage and select the Eevee as a buddy. Go to buddy screen and now you need to walk with Eevee up to 10km. Then Eevee will be evolved into Umbreon in night time and into Espeon in day time. And you need to name Eevee as SAKURA to get the Espeon or name it is as TAMAO to get the Umbreon. The name works only once for each. So choose carefully.
Reddit user “jag17t” tried the trick and this is what he has to say:
“I have been walking an eevee for 16.5 km now, and just evolved it, it is nighttime here and sure enough, it evolved into Umbreon.
I walked another Eevee today for 10 km today and evolved at around 2200 UTC (still daytime here) and got espeon so id say this theory can be considered proven”