No audio in radio app

Hi, I’m about to finish an app for ios of my web radio, but I have a big problem, when the app starts the radio is activated automatically via webViewer, but when I go to stand-by or I minimize the app to open another appnon it is more difficult. If I return to the app the sound returns. Could you help me solve the problem? Help Help Help thank you in advance. Sammy

That is not a problem with your app, it is a feature of the operating system of the device.

The user has to single out the app as being allowed to keep running on the background. It is a permission thing that the app cannot control; the user has to set it.