She will talk about a program on TV and ask which color you like better, red or blue. {“smallUrl”:“https://www. wikihow. com/images/thumb/8/88/Find-Latias-in-Pokemon-Emerald-Step-6-Version-3. jpg/v4-460px-Find-Latias-in-Pokemon-Emerald-Step-6-Version-3. jpg”,“bigUrl”:"/images/thumb/8/88/Find-Latias-in-Pokemon-Emerald-Step-6-Version-3. jpg/aid1067681-v4-728px-Find-Latias-in-Pokemon-Emerald-Step-6-Version-3. jpg",“smallWidth”:460,“smallHeight”:345,“bigWidth”:728,“bigHeight”:546,“licensing”:"<div class="mw-parser-output">
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<br />\n</p></div>"} If you pick red, you unlock Latias. If you pick blue, you unlock Latios.
Make sure to have a lot Max Repels. This will make it easier to catch Latias/Latios since the only Pokémon you’ll encounter while using a Max Repel has to be at a level equal or higher than your first Pokémon.
Use the Max Repels and run in the grass. After around 20 seconds, run into the door and back out. Keep doing this until you encounter whichever one you chose.