If you have lost data on your device undercontrol the operating system Android (and it is in the device's memory, but not on a flash drive), then recovery will require special programs.
Uma ushonelwe idatha kudivayisi egijima uhlelo lokusebenza Android (futhi kuba kumemori, hhayi drive flash), ungakwazi ukubuyisela edingekayo izinhlelo ezikhethekile.