Deleting or factory resetting can not erase the data on your Samsung mobiles completely. So when you want to resell or give away your old Samsung, you should erase all the data. But don't worry, MobileTrans can help to delete all personal data on Samsung permanently and keep the data safety.

youtu.be/WMrpnppbNrs

Works with any Samsung Mobiles:
Galaxy S: S6, S5/S5 mini, S4/S4 mini, S3;
Galaxy Note: Note 4, Note Edge, Note 3;
All other phones: Galaxy A7, A5, J7, J3, E5, etc.