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 is my Wi-Fi SD card signal unstable? I cannot access the Wi-Fi SD card when using Personal Hotspot. What should I do if I cannot delete or format my SD/SDHC card due to write protection? Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started