If there's more than one app that can be opened when  you tap a link—such as a shared social post or media link—you may be prompted to choose the app you want to use. 
When you're prompted after you've tapped a link, select an app, and then tap Always to set that  app as the default app to use. 
You can also go to Settings to see how app links have been set up for different apps and change them.  
- 
        From the 
				Home screen, swipe up and then find and tap 
				Settings. 
			 
      
- 
        Tap Apps & notifications.
      
- Tap . 
- 
Tap the app you want to configure, and then tap Open supported links. 
- Select Open in this app to always open the app without being prompted when you tap a link. You can also choose whether to always be prompted to choose the app or never use the app for opening links.