TNAS mobile is a dedicated mobile APP for TerraMaster TNAS devices.With TNAS mobile, you can access TNAS locally and remotely on mobile devices, back up photos and videos from mobile devices, browse office or PDF documents, upload or download files, browse and play multimedia files, and you can even initialize your TNAS device with TNAS mobile. Note: TNAS mobile can only work with TNAS device running TOS 3.0.31 or later version.