What does the next iPhone need to beat its rivals? The rumoured iPhone 6 and iPhone 5S need revolutionary features to be on top of the market.

New rumours claimed that Apple is about to release its iPhone 6 and iPhone 5S soon. There is an undying rumour tech giant Apple (NASDAQ:AAPL) will release the next generation of iPhone this month at the imminent WorldWide Developers' Conference hosted by the company annually.

The unannounced iPhone 6 and iPhone 5S are clouded by a myriad of rumours. A lot of concept renders are emerging on the internet as the devices' release date nears.

Rumour has it that the next iPhone will feature 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.

Meanwhile, the cheaper iPhone 5S is rumoured to sport a plastic casing, 4-inch screen display, dual core processor and 8-megapixel camera.

It is initially reported that the new iPhones will be launched in June along with the upgraded iOS. However, other reports stated that the devices will make its debut in September.

The Apple chief Tim Cook also dropped several hints that the upcoming iPhone 6 and 5S will be released later this year. Cook said that no new products are to launch before the end of the year.

However, the Cupertino-based tech company did not give an official statement on the rumours surrounding iPhone 6 and iPhone 5S.

Below are the top ten killer features needed by iPhone 6 and iPhone 5S in order to beat its rivals Samsung Galaxy S4, S4 Mini and Note 3.

Plastic Body - It is rumoured that Apple is dropping its famous aluminium body for plastic design. Although some consumers do not like this idea, it could lower the price of the smartphone.

Better Screen Display - There is a wide array of rumours on the screen display of iPhone 6 and iPhone 5S. Reports claimed that the new iPhones will have double the pixels of its predecessor. Another report claimed that the Apple's smartphones will feature a larger edge-to-edge display.

Blu-ray Technology - Apple holds a copyright for Blu-ray technology along with other companies such as Sony. This is a good addition to the smartphone as it could make the iPhones stand out in the market.

Mini Projector - Mini projector is seen in many Chinese mobile phones. Apple partnered with Foxconn, a Chinese company, in manufacturing its devices. Thus, it is possible to include a mini projector to cater to buyers, especially the business persons.

Wireless Charging - A new concept of iPhone is making the rounds showing the device capable of wireless charging. One of the most common complaints with Apple devices like iPhone is the fast depleting battery. However, with wireless charging, users will enjoy longer battery life.

Waterproof and Dustproof - There is a rumour backed by a concept image that the iPhone 6 and 5S will be waterproof and dustproof like the Sony Xperia Z.

Multi-Touch Gesture - A new approved patent from Apple will enable users to operate their devices with mere scratches or tap gesturing. The patent discusses acoustic input devices and basically means that iOS devices could also be used with sound inputs that would be transmitted via the casing that would then correspond with certain functions.

3D Camera - An iPhone concept image showed that the handset will sport a 3D camera paired with 3.2 megapixel FaceTime HD camera. Amateur and professional photographers will be delighted with the new feature of iPhone 6. The patent shows a system that would allow the iPhone to remotely control other illuminating hardware, which is a similar thing that professional photographers do when taking images with a camera.

128GB Storage - Apple already bumped the storage of the latest iPad 4. It is most likely that the company will increase the internal storage of the iPhone 6 and/or iPhone 5S.

Fingerprint Sensor - It is reported that Apple is planning to include a fingerprint sensor in Apple devices for added security. Apple purchased Florida-based biometrics security firm Authentec last year. This could mean that Apple is adding a better security feature on the smartphones such as the rumoured fingerprint sensor.