You only have to see all of the Pokemon, you don't have to catch them, which is good, to complete your pokedex. All Pokemon can be seen simply by battling trainers who have them. Just Google which Pokemon you need next. With legendaries, many times there will be some place in the region where you can just read about them, and the information will automatically be entered into your pokedex.
You have to find all of the Pokemon in Sinnoh.
You can catch and find all the sinnoh Pokemon and when you see all the sinnoh Pokemon you get the national dex and find and catch all the pokeradar Pokemon.You get the pokeradar when you get the national dex.
first you have to finish the sinnoh pokedex.then you show your work to professer rowan
find all 210 Pokemon on sinnoh pokedex then visit profeser rowan
Just go to Pokemon platinum central and click on pokedex and it shows you where to battle all the Pokemon in sinnoh.
The Sinnoh region was one of the Pokemon regions. Sinnoh took place in all 3 of these games: Pokemon Diamond, Pearl, and Platinum.
you have to see all the Pokemon in sinnoh
yes
they r all scattered around sinnoh!!.....keep looking.....!!.....:P........................
I don't know if there is a code. But you can complete de Dex by seeing all Pokemon in platinum. All Sinnoh-dex Pokemon can be found ingame.?
You can catch Sinnoh Pokemon in Pokemon platinum, but you need to migrate and trade unless you have an action replay
go and see all the Pokemon in the sinnoh dex