On iOS

1. Open the App Store on your iPhone.
2. Tap your profile icon in the top-right corner.
3. Scroll down to see the list of available updates.
4. If the game appears there, tap Update next to it. If it doesn’t appear, try swiping down on the screen to refresh the list.

On Android

1. Open the Google Play Store app.
2. Tap the Menu icon in the top left corner.
3. Tap My applications and games.
4. If an update is available, an Update button will appear next to the game of the game.
5. Tap Update to install an available update.

You can also turn on the option to automatically download updates for your apps:
1. Open the Google Play Store app.
2. Tap the Menu icon in the top left corner.
3. Find the Settings section.
4. Tap Auto-update apps.
5. There you can choose between 2 options:
- Auto-update apps at any time.
- Auto-update apps over Wi-Fi only.