In addition to the above problem, my iPhone also occasionally presents grey flickering bars at the top of the screen (does not appear in a screenshot). At all times, the home button and sleep/wake button are fully functional.
I was going to try to restore my iPhone (currently running iOS 9.2 beta 4) but it appears a forum on Apple.com shows that device restores are help in some cases but primarily it is a hardware issue and people are getting their devices easily replaced with new/refurbs at the genius bar. To top it off, my iPhone also qualifies for the iSight Camera Replacement program.
If you have an iPhone 6 Plus with this unresponsive touchscreen with grey bars and occasional screen flickering that occasional becomes responsive again after applying pressure on the screen or hitting the back of your phone, you need to get it replaced by Apple. I'm almost surprised it's not a separate recall program as it appears to have been happening for quite sometime (and likely more frequently lately as iPhones are becoming over 1 year old).
https://discussions.apple.com/thread/7028290?start=180&tstart=0
I was going to try to restore my iPhone (currently running iOS 9.2 beta 4) but it appears a forum on Apple.com shows that device restores are help in some cases but primarily it is a hardware issue and people are getting their devices easily replaced with new/refurbs at the genius bar. To top it off, my iPhone also qualifies for the iSight Camera Replacement program.
If you have an iPhone 6 Plus with this unresponsive touchscreen with grey bars and occasional screen flickering that occasional becomes responsive again after applying pressure on the screen or hitting the back of your phone, you need to get it replaced by Apple. I'm almost surprised it's not a separate recall program as it appears to have been happening for quite sometime (and likely more frequently lately as iPhones are becoming over 1 year old).
https://discussions.apple.com/thread/7028290?start=180&tstart=0