I've been just stuck on this. They said they would call often, yet I got called once (when I found the XTranceiver). How do you make them call you? I want to trade with them.
You have to be in a specific location on a specific tile.
Source
Curtis/Yancy will automatically call the player on any one of fifteen specific spots. They can only be triggered once.
Nimbasa City (behind the Battle Institute) Driftveil City (on top of the northern hill, below the Worker guarding the Clay Tunnel entrance) Lentimas Town (on the path behind the northern house towards the hill with the Fire Stone) Mistralton City (on the southern half of the runway, in the center of the lane) Undella Town (southwest corner, up the stairs and between the two boulders) Lacunosa Town (under the bridge in the center of town) Route 5 (on the other side of the southern fence, towards the Hyper Potion) Route 6 (just above the two shortcut ledges on the south end of the route, east side of the stream) Route 7 (on the path between the Pokémon Breeder and the southern house) Route 9 (to the left of Shopping Mall Nine, near the L-shaped bush) Route 11 (in front of the truck, between it and the stream) Route 12 (on the highest hill, down-left most square) Route 13 (on the south beach, between the running Ace Trainer and the Fisherman on a sandy corner by the water's edge) Route 14 (towards the Abundant Shrine, on top of the waterfall with a small square of land on the right, west of the Backpacker) Route 16 (west side of the route, south of the Depot Agent and north of the male Cyclist, middle of the road)
After returning their Xtransceiver, the game will randomly select one of the 15 areas where Curtis/Yancy called the player initially, and the player can call Curtis/Yancy from anywhere in that area. This will happen every time Curtis/Yancy is called from then on.
