Consumers may have to wait longer than expected for the rumoured smartphones of the tech giant Apple as it faces various issues denying its alleged June release date.

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.

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.

As usual, Apple did not comment on the rumours about iPhone 6 or iPhone 5S.

Below are the five reasons why the June release date iPhone 6, iPhone 5S

iOS 7's Delay - It seems that there are some problems in the development of the latest operating system of Apple - iOS. This will cause a major delay on the release of iPhone 6 and iPhone 5S.

iPad 5 and iPad Mini 2 Launch - There are claims that Apple's smartphones will be released at a later date due to the imminent release of the company's tablet - iPad 5 and iPad Mini 2.

Prices of iPhone 5 Still High - It seems that the rumoured imminent release date of iPhone 6 and iPhone 5S will not happen as previous iPhone models remain expensive. Listings on the online retail giant Amazon, iPhone 5 is still being sold between $700 and $900. iPhone 4S costs around $500. iPhone 5 under a contract bears a price tag that ranges from $99 to $199.

T-Mobile's iPhone 5 Recent Availability - US carrier T-Mobile's delayed availability of the current iPhone. It has been less than a week since T-Mobile announced the long-awaited release of the iPhone 5 on its network free of contract. The smartphone will make its debut with T-Mobile on April 12. Pre-orders for the handset began for the iPhone 5 on Friday.

Production Issues - New rumours claimed that Apple is having problems and issues when it comes to the production of the upcoming iPhone 6 and iPhone 5S, especially in including the rumoured fingerprint sensor.