SBU files are associated with Samsung smartphones. SBU files store phone full system backups. Backups are created with Samsung Kies, a smartphone management application. available for Windows and MacOS.

SBU files can also be used to backup data from tablet devices. Users can backup their photo collection, contacts, music, or videos captured with given device. Kies is the defalut tool for performing backups of data stored on Samsung devices. SBU files can be opened using Kies or SBU Extractor tool available for Windows.