Best File Copy Apps for Android

Ultracopier is free and open source software licensed under GPL3 that acts as a replacement for files copy dialogs. Main features can include on-error resume and error/collision management. Brings multiple kind of communities together (users, developers, and designers). Works with all devices: hard drives, USB keys, CD-ROMs. On-demand customization through a large choice of skins and plugins. Ultracopier is faster than most default system tools. It provides many advanced features such as start/resume the copy process, speed limitation and search through the copy list. Ultracopier predicts internal and external errors. It results in detailed information dialogs which allow you to pick up the best solution (eg. always overwrite and overwrite if newer).