iOS

1. Open the App Store app.
   
   
   
2. Tap Today.
   
   
   
3. Tap the Profile button at the top of the screen.
   
   
   
4. Navigate to the Pokémon GO app and tap the Update button.

Android

1. Open the Google Play Store app.
   
   
   
2. On the top left, tap the menu button.
   
   
   
3. Tap the My apps & games menu option.
   
   
   
4. Navigate to the Pokémon GO app and tap the Update button.