Last weekend I made an appointment with Apple because my iPhone 6 Plus shots with the rear Camera have been blurry for the last few weeks. All attempts to get the camera to focus were futile. Nothing worked. And it really bothered me to no end!!
Apple replaced the camera free of charge (and a 2 hour wait). And all is well.
Today I just came across an article at iDropNews that says Apple is now openly acknowledging that some iPhone 6 Plus devices have a faulty rear camera and has announced a recall. If you are experiencing a rear camera that will not focus, click the following link to find out if your Serial Number is eligible for free replacement: iSight Camera Replacement
According to Apple, defective units were sold between September 2014 and January 2015.