September will be a big month for smartphone aficionados as both Samsung and Apple are planning to launch their latest gadgets at approximately the same time.

The Galaxy Note 4, which Samsung admits to be its most impressive smartphone so far, is rumored to have a 5.7-inch display. The so-called "phablet", which is a term combining the words "phone" and "tablet", will have the same screen size as its predecessor, the Galaxy Note 3. However, the Galaxy Note 4 is speculated to have a crisper version of the screen.

In addition, the Galaxy Note 4 is anticipated to be waterproof. It is also speculated to offer an eye-scanner technology. This advancement allows users to pay bills and other expenses safely by authorizing such payments through an eye scan.

On the other hand, the iPhone 6 is said to have a bigger screen compared with previous gadgets in its line. In what appears to be an effort to catch up with the "phablet" mania, the iPhone 6 is rumored to come in two variants - a 4.7-inch version and a 5.5-inch version for its screen.

To match the eye-scanning technology offered by Samsung, the iPhone 6 is said to include in its features the haptic technology. In this feature, the phone will be prompted to emit minor vibrations depending on the touchscreen area pressed. This will pave the way for developers to produce intuitive games and apps.

With respect to the processor chip, the iPhone 6 is expected to have the A8 chip. Similar with the iPhone 5s, this chip should support the 64-bit. Some are speculating that the iPhone 6 will likely come with the next-level M7-co-motion processor chip. Apple will also probably not change its RAM offering. The device will possibly be offered with 1GB RAM, as well as 16, 32, 64 GM models.

The Galaxy Note 4 is projected to come with an octa-core Exynos CPU or a Snapdragon 800-series SoC. This might be combined with 4GB RAM. Some fans presume that the Note 4 might have global LTE coverage.

In terms of camera, the iPhone 6 is possibly going to have the 8-megapixel camera. Despite the lack of improvement in this aspect, the latest Apple device might introduce considerable upgrades to its camera. These might include the optical image stabilization module, which may be an attribute especially made for the iPhone 6.

The Galaxy Note 4 is rumored to have a 20.1-megapixel camera in the back. The front camera is said to probably be 4 megapixels.