Hello. My usb port has reliably played music from my flash drive for 7 years (2014 Kia Soul). Then my friend plugs her phone into it (make model unknown) to play her tunes. Drop her off,plug in my flash drive and nothing. Not even a "reading USB" notice. Just no reaction from the dash at all. Tried again another day worked fine. THird day same nothing reaction as the first day. The problem is intermittent bordering on usually never playing from the flash drive. TEsted the flash drive in other devices and it works fine. Haven't altered the flash drive contents in any way (adding or removing data). Any thoughts?