I'd like to get an SD card reader for my Iphone, but have no idea which one to get. Of course I don't want to spend a lot of money. I bought one at wally world on clearance and I think my Iphone 6 doesnt recognize it. (Stealth Cam w/lightning cord) I'm not tech savvy at all so i have no idea what one to buy from amazon. Can someone point me in the right direction?