Hi! I love this phone and it was supposed to have USB OTG working. Maybe it does work for external storage, but I want to make it work with my DAC Fiio E18, which is compatible with Android devices via USB OTG. On my previous Samsung Galaxy S3 it was no problem and the DAC worked well with the phone and transmitted the music externally. However Ascend P7 seems to not see the Fiio E18 at all when connected via USB OTG cable, does not recognize any USB OTG signal from the DAC and does not transmit any sound via the DAC. Anyone knows if there is a solution for this? Thanks!