You can trade with Sapphire and Ruby
When you give him the ruby and sapphire gem.
When you obtain the ruby and sapphire
A ruby and Sapphire.
you can trade with ruby sapphire and emerald
When the ruby and sapphire are recovered the Network machine can be repaired by Celio on One island. The Network Machine allows players to trade with Pokemon Emerald, Sapphire, Ruby, Coliseum, and Pokemon XD.
did u talk to celio? u give it to him, and then he puts it into the machine. (u must give him the ruby first.)
He will put both gems in the network machine which when operational will allow you to trade between ruby, sapphire, emerald, colosseum and xd gale of darkness.
Get the saphire, then talk to Celio.
You give it to Celio
Once you deliver the ruby and sapphire to celio the machine will be in operation this means you can go upstairs in any Pokemon center go to the trade center and trade between ruby, sapphire and emerald version.
beat the elite four with 60 owned Pokemon in your pokedex. celio will not tell you to get the ruby and Sapphire until u do
fire red: after you give the sapphire to celio, now you can trade with Pokemon ruby, sapphire and emerald