When I connect my otg adapter with a usb card reader attached my phone notification says it is charging the connected device via usb. I cannot access the files on the card reader. While trying to get it working suddenly the message said a usb mass storage device connected and I was able to transfer a photo from the sd card to my phone. After removing the otg adapter and trying again it no longer works and I have not been able to duplicate my previous success. Any one know how to get this to work consistently?
I think I found how to duplicate the issue. I installed a usb mouse dongle and was able to use the mouse. After removing the dongle and inserting the card reader it worked also. Removing the otg adapter reverts back to the problem.
Since when? The phone came with the adapter I'm using. It has worked in the past and works now sporadically. If it can be used to transfer data from one phone to another I would call that OTG able. These folks seem to believe it does. Samsung phones that support OTG