How to make a calling app in android

In this tutorial, we are going to learn how to make calling android app using MIT app inventor. In this tutorial, we are going to use the calling component and button for call action.

First, we took one layout
Then we drag and drop the calling component from share options
Then drag and drop the button.
Now We need to write some simple code.
Go to block option and then click on the button and choose
the action when someone clicks on the button then choose the
make a call option from the calling component and drag and drop these option and
then go to design option and click on calling component and put the number in calling component properties and now your app is ready to make a call.
If you have any doubt you can ask me on the comment.