This issue only needs to be tested in 1 device. This issue is tricky to test because we weren't able to reproduce the original issue (some H5P packages not being downloadable in some specific devices). We'll simulate a failure while downloading by going offline, but this will cause some problems that wouldn't happen with the original issue. Create an H5P activity with a big H5P package. E.g. we have one in our master site > MM Dev Testing course > H5P > MOBILE-3917 . Open the activity in the app, it should display a "Download H5P file" button. Click to download and, while the app says "Downloading", go offline (e.g. by activating flight mode). This is why it's important that the H5P is big, the bigger it is the more time it takes to download so it's easier to make the download fail. If this was a real error like the one reported, you would see a Toast at the bottom saying "This activity is only available with an internet connection. If your device is offline, you will not be able to access it". And the package would play online. However, since the device is offline, some more things will happen. The app will display the Toast at the bottom, but the activity will not work (the iframe will probably display an error saying "Webpage not available" or similar). Also, if the H5P activity has tracking enabled, the app will also display an error saying that any changes done while offline may not be saved.