So I got a used Mambo FPV and it works great. Without an SD card videos save to the phone just fine. When I put the SD card in the camera it acts like it is recording, but nothing saves to the card. I formatted the card in the app and that didn't help at all. Is there an SD card comparability? It's a no name 16Gb. I'm trying to find a smaller card and will try using a SanDisk 32Gb once the battery is charged again, but I'm at a loss for now.