This SD Card Reader NOT Support iPad Pro 11-inch with USB-C connector and iPad Pro 12.9-inch with USB-C connector. Because the APP "iUSB Pro" is special design for iphone special connector, we are so sorry this card reader now will NOT compatible for the latest iPad Pro with USB-C connector. But it's still works with old version iPad Pro with iphone connector.
Please download the free app named "iUSB Pro"from app store (iOS system). If your iphone can't read the card reader,Remember download app "iUSB Pro" again.
Android phone can use directly without app,open otg function and when you connect the card reader, please enter into the phone "file manager" to operate.
Any problem after you received geekgo card reader, please let us know first before leave a feedback / review. We will definitely resolve the problem to all of your satisfactions!