you can't without cheating
There isn't a way to get master balls with cheating...
you dont......you have to cheat but i am still trying to figure out how.
You should press A and then B in rapid secession
Getting master balls without cheating in Pokemon DP is very hard. The only ways are: to win the lottery in Jubilife City, or receive a Pokemon that has a master ball from trading. I have 2 master balls in my game. I traded with a person who had a Pokemon with a master ball.
cheating
By the Lottery in Goldenrod City or trading from other games.
When releasing the ball, rapidly press A. Then, when the Pokemon gets in the ball, hold B.
nnnnnnnnoooooooo! of course notThere is a wayTo get 999 master balls each day go to the Pokemon lottery and get a Pokemon with the same nubers in their ID. It will take a long time P.S Dont worry it is possible. I got 16 master balls by doing that
kaleb's cheating device.
You cannot buy master balls. You get one after a landmark event in the game (Not sure which, but it is in every game), usually from the professor. Do not waste it, because it is the only masterball you will ever get in that game without trading or cheating.
more like 493 master balls. its a cheat on the AR look up the code for it. its called Pokemon modifier.