Why can't I download files to the micro SD card on my android smart phone (Android 4.4.X) using the WI FI SD APP? Category : Setup / Operation In Android version 4.4 or later, the Third-Party software has no permission to access files in external micro SD cards. Please change the storage path to the phone's internal space. Is the answer helpful? Related Why would the downloaded data be incomplete when using the automatic download function on the Android WiFi SD App? Why can't I connect my Wi-Fi SD card to Hotspot in Internet Mode? Why can't my mobile phone and tablet search any Wi-Fi signal after the Wi-Fi SD card is inserted into Nikon DSLR? Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started