So two nights ago, my wife and I were getting ready for bed. I turned the alarm clock on manually on the iPhone(iOS 8.0.2 / iPhone 6). I connected the lightning cable, then hit home key, then locked phone. Laid the phone on my side table anc confirmed it was locked. TV in our room was off. Wife and I spoke a little but not much within a 3 minute span. I turned back over to side table and noticed SIRI was activated. I just stared at the phone for a few seconds in silence...and SIRI never stopped and never cancelled itself or said, "Sorry I did not understand that.." or whatever generic response she'd typically come up with. It was as if the phone was just listening. Neither of us said 'Hey Siri'...a function that I do have turned on. I figured maybe we said something close enough. But I found it odd SIRI didn't cancel itself out when there were no direct commands after I noticed it being activated. I'm not exactly sure how 'Hey SIRI' works, but I figured that since it only works when connected to a power source, that the MIC is some how active or sleep mode active. Considering how Apple forced U2 onto all of us, who's to say they're not listening to us when we're charging our phones. LMAO. Far-fetched but I think I may keep 'Hey siri' turned off for a while.