There are recent reports of some iPhone 6 Plus cameras begin to produce blurry images. Apple has recognised the problem and is launching a replacement program.
Apple has determined that, in a small percentage of iPhone 6 Plus devices, the iSight camera has a component that may fail causing your photos to look blurry. The affected units fall into a limited serial number range and were sold primarily between September 2014 and January 2015.
Only some of those iPhone 6 Plus sold between September 2014 and January 2015 are affected. You can check if your iPhone 6 Plus is affected by entering your phone’s serial number on Apple’s support page. You can locate your iPhone’s serial number from Settings > General > About.
If your device is eligible, Apple will replace the back iSight camera free of charge. The replacement program is worldwide, but Apple might restrict the repair to the country of original purchase. Replacement can be handled by an Apple Authorized Service Provider, an Apple Retail Store or via Apple Technical Support.
Visit Apple’s support page for iSight camera replacement program for iPhone 6 Plus to get started.