Whenever I'm downloading large files (such as videos) on Documents by Readdle, I need to keep my screen on whilst running the app, otherwise the download will stall and fail. Usually, I'm waiting for the download to finish by opening other apps to kill time. If I'm on another apps for several minutes, the download will stop. That's why I need to switch app to Documents every one minute or so to ensure the download won't stall. Is it because of 1GB RAM of my iPhone 5? Does this happen in 2GB iPad Air 2? For now, the workaround is to keep the screen on, by turning the auto lock off, with the app still opens. That, if I don't want to do anything on my iPhone. If I decide to play with my phone whilst waiting, I need to switch apps to Documents every a minute or so to make sure the download is still going. Does anyone have this issue? It's annoying to have to keep an eye on your phone when downloading files. I wish I could just leave it on the background without affecting the download progress. And no, Documents by Readdle doesn't have Background App Refresh option on Settings. Thanks all!