Apple has started a replacement program for the iSight camera on the iPhone 6 Plus phablet.
A small percentage of iPhone 6 Plus units reportedly have a component that may fail and cause photos to appear blurry. Fortunately, the affected units fall into a limited serial number range and were sold between September 2014 and January 2015.
So if your iPhone 6 Plus seems to be producing blurry photos lately, you should head over to the support section on the Apple website (simply click on the source link) and check if your device falls under the affected serial number range. If it does, Apple will replace the 8MP iSight rear camera on your device, free of cost. However, do note that carriers aren’t a part of this program, so you will have to take your device to an authorized Apple service provider or an Apple retail store to get your iSight camera replaced.