Press and hold the power button to turn on your device.
Open the app or game you’re playing.
Go to the menu or options screen.
Select the option to create or edit a Pokémon.
Choose Mew as the Pokémon to use.
Enter the required code, item, or conditions for Mew (if applicable).
Save your changes.
Confirm Mew is available in your party or storage.
If Mew is not available, complete the game’s official Mew unlock event or requirements.