I had this with my iPhone 5 replacement from Apple. Sent it back and they sent me a click-free one. I swear I heard it on my 6 twice now but I can't duplicate it anymore... I'm going to keep an eye on it.
Just go to Apple (if you can duplicate the issue) and they should fix you right up.
mine does that too, but once you click it once, it won't click until hours later. so most likely the genius people could not replicate that on demand, I'll wait to see if it gets worse before I take action
Having the same issue. Did with my 5 and it's what I get for launch day inventory. No regrets still. I just can't replicate the issue alllll the time now, but either way I can still see the screen move and I don't want to push it off and have it get worse knowing I still intend of replacing it.