Even before the official launching of Apple's latest smartphones, the iPhone 6 and the iPhone 6 Plus, speculations about a possible iPhone 7 have surfaced.

A French website, for instance, has already claimed that the tech giant will be unveiling the iPhone 7 in 2015 with which the device can be expected to be even slimmer than the latest models in the iPhone series. iPhone 7 rumors have also been stating that the upcoming device will weigh as much as the iPhone 6 at 129g, but will look more of a phablet than a regular smartphone.

Interestingly, the rumored iPhone 7 may come with gesture controls that have already been exhibited in Samsung's recent offerings such as the Galaxy S5. This will allow an individual to use the device without the need to actually touch it.

Moreover, due to concerns about the iPhone's battery life, it has also been speculated that solar power will be used and that solar cells on the display of the iPhone 7 will charge the phone all throughout the day. Walking under the sun will then help increase its battery life.

Because of the recent reports on the iPhone 6's bending problems, Apple is rumored to be making the succeeding handset to be intentionally flexible using sapphire glass and a body that takes on the form of phones such as the LG G Flex.

Additionally, an expanding range of smartphones at present are becoming water-resistant, such as the Galaxy S5 and select Xperia phones from Sony. Apple is then being expected to come up with a waterproof device with which the entire phone, including the main circuit boards, will be protected from water.

A rumor that is highly unlikely to come about next year is the iPhone 7 allowing users to have holographic projections. Expecting such a high leap in technology would certainly excite the world; however, Apple has never been the company to take on such kind of technology and integrate it into their mobile offerings. As such, customers who are expecting this kind of innovation may have to look into other companies' devices first.