While you are on a phone call on the app, the credit does not update real time. Recently had to make looooong international phone calls and i need to login to my account on the web for seeing credit drop at every refresh so i know whether is enough or i need to add more. Why cant you make it possible in-app while on the call on the main screen? Can have a small "refresh" button and it will poll the server for up to date credit. Thanks