Technical Information

Why do I get a black screen with audio still playing out in the background when I am watching a programme on my Android device?

The All 4 application automatically detects the best available bandwidth to play out the most suitable quality video/audio format. If you are in an area with low Wi-Fi or Mobile Data connectivity, the application will detect this and send a lower quality video stream. The lowest quality stream is audio only. As soon as the application detects you are in an area with better connectivity, a higher quality video stream is transmitted.

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