Forum Thread
What should I buy first?
Forum-Index → Help → Answered → What should I buy first?Egg Radar Chips works with an Egg Radar.. and, if you also have the Egg Dex entries or "hatched" the Pokémon in the same rarity as of those chips (i.e. easy, etc.) that you'll buy with it. Then, it'll unlock the "Tall Grass" area for you.
The PokéRadar works after buying its batteries, turning it ON and hatching the first Egg for your shiny hunt.. then, hatching the same kind of Egg until you hatch your shiny. Then, it'll reset your chain if you didn't upgrade into a Premium Account yet.
either way both need loads of pd. radar isn't rly needed soon. you can survive without it
also, there's not 100% chance there's eggs in the tall grass