It is often said that "bigger is better" and that seems to be the mantra adopted by major smartphone makers for 2013. A slew of 5-inch 1080p smartphones have already set the trend, and things are looking "bigger" and brighter as the year progresses.

Huawei unveiled its 6.1-inch Ascend Mate phablet at the recently concluded CES 2013, and several major players like ZTE, Samsung, and Sony are also said to have 6-inch plus smartphones in the works.

We take a look at the top three 6-inch smartphones to watch out for in 2013. Here's a look at the three rumored colossal phablets: the ZTE Nubia Z7, the Sony Xperia, and Samsung Galaxy Note 3.

Galaxy Note 3

Samsung's Galaxy line-up of smartphones ruled the roost in 2012 and if rumors are anything to go by, the Korean company is set to retain its smartphone market leader title for another year.

The Galaxy Note 3, the successor of the best-selling Galaxy Note 2, is slated to make an appearance at the IFA 2013 in September. Speculations have been rife as to what the behemoth will house inside, and how will Samsung up its game and give consumers a device that betters the Galaxy Note 2.

Rumor has it that the Galaxy Note 3 will sport a ginormous 6.3-inch OLED screen. It is also conjectured that the device will feature Samsung's new "Youm" flexible display.

The Galaxy Note 3 is also speculated to house the Exynos 5 octa-core processor, which combines two quad-core processors i.e. a 1.8GHz ARM Cortex-A15 and a 1.2GHz Cortex-A7.

The Galaxy Note 3 will likely pack in the S Pen stylus, its USP and something that may not be available on the other two devices. Additionally, Samsung recently patented an eye tracking technology (Eye Pause and Eye Scroll), which it could possibly include in the Galaxy Note 3.

The next-gen phablet is also expected to come pre-loaded with Android 5.0 Key Lime Pie and is speculated to release in the second half of 2013.