Now I know i am first time poster, never had an issue i couldn't figure out, but as a novice audiophile i can't seem to figure this out. I recently bought, well stated above an iBasso D-zero for my s3 at first it worked flawlessly but now i can't seem to prevented it from killing my smartphone. Now by killing it i mean that i have to plug it into the wall before i can boot it up again (which boots like if it was low in battery but isn't and then turn it off and on to boot back to android) and i have tried having the smart phone both and off before plugging it in, having the d-zero, on and off when plugging it in, and yes i made sure not to have the charge switched on. Finally i was wondering if anyone has come across a particular issue were this happened to them. either way i sent an email to ibasso and hopefully they can fill me in and i'll let you guys know.