Mobizen allows you to save with both 1. External Storage(SD Card) or 2. Internal Storage(Stoage built-in the Smart Phone).
How to Save the External Memory (SD Card)
Mobizen Settings> Storage path > Click on External Storage to enable saving on your SD Card.
Caution!
By Uninstalling the Mobizen App, all related files stored in the external storage will be deleted. Also, files will be available in the Mobizen video list and NOT in your gallery.