Hello, i am trying to do the next thing:
- Go to my application settings
- Press Support by a Call button (This button is supposed to switch between my app and the native phone app with a specific phone number)
And the question here is:
How Can i do to know when is in another app? and
How Can i validate the phone number that is displayed on the phone app?
Is it possible?
I ask that here because right now i don’t know where can i start from.
Thanks a lot