Perhaps the best way to explore the Samsung Galaxy Note 4, which is slated for an October 17 release in the U.S., is to compare it with its predecessor - the Samsung Galaxy Note 3.

For Samsung, developing the Galaxy Note 4 is indeed a monumental step forward. The latest phablet is being promoted as an "innovative breakthrough" of the company with an entirely made-over design.

Samsung has developed the Galaxy Note 4 with a "premium metallic side frame" and "fluid curvature" on its 2.5D glass screen.

The soft-textured polycarbonate back cover of the device along with a faux-leather pattern provides an ergonomic as well as a solid feel for unbelievable comfort that makes it easy to use it with one hand.

Therefore, notwithstanding the 5.7-inch size, the latest Galaxy Note 4 is easy and comfortable to carry as well as use. This is one of the major selling points of the new phablet - an irrefutable advantage over the Galaxy Note 3, which might be the last device to come in a plastic build.

Under the hood, the two devices are almost same in terms of the 3GB RAM and 32GB storage.

However, the Galaxy Note 4 has a superior display and a more highly developed processor compared to the Galaxy Note 3. The latest Note is powered by a quad-core 2.7GHz Snapdragon 805 processor, and it comes a 5.7-inch Super AMOLED display having a resolution of 2,560 x 1,440 (515 ppi). On the other hand, the Note 3 also measures 5.7 inches, while its display is at 1,920 x 1,080 (386 ppi). It runs on a 2.3GHz Snapdragon 800 processor.

In terms of battery, the Note 3 has 3200 mAh battery, while the Note 4 comes with a 3220 mAh battery. Although this may appear to be a small change, there has been a dramatic enhancement in the battery life of the new Note 4.

The battery of the Galaxy Note 4 has a more useful charging capacity too. With its Micro USB port incorporated with Adaptive Fast Charging brick, meaning the battery life of this device can go from 0 to 50 in half an hour.

The difference between the layouts of the two devices is very minimal. Similar to the Note 3, the latest model also features a 3.5mm headphone jack, IR blaster, microphone, S Pen, and speaker, but it also comes with a fingerprint scanner.

The camera of the two devices also separates them. The Note 4 boasts a 16-megapixel rear-facing camera and a 3.7-megapixel front shooter, an upgrade from Note 3's 13-megapixel rear- and 2-megapixel front-facing cameras.