Most legal apps use DRM (Digital Rights Management). While you cannot transfer the MP4 file to a USB stick, you can save it within the app:
When users search for "MP4 mobile movies," they are usually looking for specific parameters: mp4 mobile movies moviezwap
According to a 2023 report by the Global Innovation Policy Center, digital piracy costs the US economy alone nearly $30 billion annually, with over 230,000 jobs lost. Most legal apps use DRM (Digital Rights Management)