Impossible - I did not use the BBC Sport app correctly, but I think that it uses the default player for the device (which is an Android player), and thus this is the only time you want when you want full screen mode.
Android uses these buttons - otherwise, how can you exit the application? This is similar to the home button on iOS - you need it to work on the device.
There are event listeners that you can use for the back button and menu buttons that you can override by default for:
document.addEventListener('backbutton', function () {
}, false);
document.addEventListener('menubutton', function () {
}, false);
Something about it. Think about Samsung Galaxy phones - these are hard buttons, so you cannot “hide” them like you can on Android.
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