OK, it's probably on this 359 page thread somewhere (or it's also large sister thread), but that's a lot to go through, so I'll ask here. I noted the Android issues above, doesn't connect to anything that's not A and K. I thought maybe I could use otg and connect that way, at least use it to listen to TIDAL. I also have USB audio pro app on my HTC One M8, don't keep a ton of music on the sd card, but have some I could listen to, could always change the 64gb card to 128 (bit of a pain transferring things, but would be a possible use if...). So, connected otg cable (tried a few, as I have been previously told some just don't work with a particular phone), TIDAL into CEntrance M8, didn't work. Tried USB Audio Pro, didn't work. Looked in settings, can't find much to do on phone, usb Audio Pro has a setting to use usb items, selected it, nothing. Get a message that there is no usb device recognized. I have connected the CEntrance to my PC, works fine. Any ideas? Likely something I'm not doing, some setting or other, but haven't a clue what. Thanks.