Market reports also said that both of these phones will be installed with fingerprint sensor. Fingerprint scanner was also used in iPhone 5S. The fingerprint reader on Apple Inc's top-end iPhone 5S received an early thumbs-up for easing use from two influential reviewers, helping dispel concerns about the scanning technology which has been notoriously unreliable in other cellphones.

Apple's scanner is seen as a first step towards realizing the full potential for biometrics in personal electronics, heightening security for applications like banking and shopping while doing away with multiple passwords.

Earlier in December 2013, Apple CEO Tim Cook’s letter to employees started a debate about the launch of big screen iPhone in the tech arena. It was also anticipated that iPhone 6 will be out in the market much before its expected time.

"We have a lot to look forward to 2014, including some big plans that we think customers are going to love," Apple CEO Tim Cook said in a letter to its employees.

"Together we've shown the world that innovation at Apple goes beyond our products to the way we do business. I consider myself the luckiest person in the world for the opportunity to work at this amazing company with all of you," he added.

Cook previously hinted that Apple had lots of products lined up for the 2014 including some new product segments.