Make sure that the phone has good battery/wall power.Ģ.

Samsung phones typically put the real external SD Card here.ġ. Optional SD Card - On some phones this is the actual SD Card and many other phones do not have this space. SD Card - On some phones this is the actual SD Card and on others it is emulated SD Card space.ģ. System - This is the protected data area shared by all applications.Ģ. Then use this utility to sanitize the free space.Īlthough we cannot guarantee that all free space will be sanitized, this application finds all of the free space that Android will give us in three primary areas where data is normally stored and overwrites it as completely as the phone will allow:ġ. Use other tools to delete files and clean the cache. This application does not delete files or clean the cache. If you are afraid of the government peeking at your phone and extracting and reconstructing deleted files, this is the app that you want. Similar functionality can be found on desktop machines using utilities like CCleaner, Eraser, and File Shredder. This utility can help to prevent that from happening by sanitizing the free space on a phone. It is possible to forensically extract information from a smart phone using mobile forensic tools such as Cellebrite and XRY even after it has been deleted. Please provide feedback to the developer rather than giving a low rating so that I can fix whatever is wrong. But, it's a free app with no ads and works for most people.

So, if you are running KitKat, it may or may not work for you until I get time to investigate the issues with some phones. In our continued effort to make this work with KitKat, we have had mixed results.

Secure wipe