make sure you have an eevee. get to max happiness by giving it masages (veilstone city) and then level up at night time and it should evolve.
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You need to make Eevee love you, and then you evolve it at night.
no it doesnt work you have to give evee rare candys and soothbell at night to get umbreon and day to get espeon i think
To make Eevee evolve into an Umbreon, you have to level it up with high happiness at night.
make evee touch it and it will evolve
NO to get umbreon you make eevee super friendly and then level at night or use moon shard (not on d/p)