Apple Inc said today it would replace a limited number iPhone 6 Plus phone cameras due to faulty back cameras that take blurry photos.

The affected phones were mostly sold in a four-month period between September 2014 and January 2015, Apple said on its website.

The company, whose shares were set to open at their lowest this year said a small component in the affected 6 Plus's iSight back camera may fail.

Apple said it would replace the phone's camera free of charge if it takes blurry photos and falls into a particular serial number range.

Eligible serial numbers can be checked on Apple's website. (http://apple.co/1KaXcs9)

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