I am using a Galaxy S3 phone with Android 4.4.2 and am trying to free up some space on my phone. I do not currently have an SD card but am thinking about buying one. I have a news app (The Economist, if it matters) that is currently using 28.30 MB plus a cache of 46.25 MB as reported in the application information. If I look at the directory structure of my phone however, I see this app also has a folder at the top level of the phone's directory tree that is using 3 GB. If I buy an SD card and move the app to the SD card, will all 3 GB stored in the top level folder also be moved to the SD card, or is that entirely dependent on how the app behaves?