Using Firebase's Remote Config API, you can make changes to the app without the user actually downloading an app update. One example of this is when you push a new update to the app in production, you can show the pop-up message to the user when they launch the app about the update.
To set up Firebase Remote Config, head over to the Grow tab in the Firebase console and click on Remote Config as shown in the following screenshot:
Add the Parameter key and the Default value. There is an optional field for adding the description. Click Add Parameter to proceed. Avoid storing any confidential information in the remote config. Firebase also allows the setting of conditions for the parameter. For example, if you want to show a specific welcome message to a user in India and a different message to a user in the USA, remote configuration can come in...