Consumers may have to wait longer than expected for the release of iPhone 6, according to Jeffries analyst Peter Misek.

According to Jefferies analyst Peter Misek, the rumoured low cost iPhone 5S will most likely be delayed. Misek also said that the possible cheaper iPhone launch could be pushed to this year's fourth quarter and an iPhone 6 probably would not come out until June 2014.

"iPhone 5S is having preproduction issues with mass production at least a month or more away. This combined with the publicly discussed delay of iOS 7 puts a July availability at risk. We continue to believe there is almost no chance the iPhone 6 launches in CY13 [calendar year 2013] due to supply chain issues," Misek said.

Another analyst predicted a possible delay on iPhones' release date this year. According to a report by KGI Securities analysts Ming-Chi Kuo, people should expect to see the aforementioned device later this year.

Kuo said that part of the problem with the iPhone 5S products lies in the rumored fingerprint sensor that Apple is adding. Finding the right color coatings to prevent interference with the sensor has been an unforeseen challenge.

The Jeffries analyst provided a similar claim in an estimate he provided in February of this year. These reports do seem to contradict many of the rumors circulating about the iPhone 6's release date.

Some of the rumoured features of the next iPhone are Retina or IGZO screen display, A7 quad core chip processor, iOS 7, 128GB internal storage, 13 mega-pixel camera, and longer battery life. The lack of NFC support on the iPhone 5 was one of the biggest criticisms aimed at Apple's smartphone.

The low cost iPhone 5S, on the other hand, is rumoured to sport a plastic casing, 4-inch screen display, dual core processor and 8-megapixel camera.