Sprint is about to update the Galaxy Note Edge with the Android 5.1 Lollipop, making it the first U.S. carrier to do so. A Samsung Galaxy smartphone is displayed at the company's headquarters in Seoul, Jan. 7, 2015. Reuters

After the Galaxy Note Edge was announced alongside the Galaxy Note 4 in September 2014, the former was released in November with a very hefty on-contract price of $399.9 with AT&T and Verizon. Sprint has been selling the same device for an even higher on-contract price of $429.99. But now AT&T has slashed the on-contract price of Note Edge to $199. Moreover, it's selling the Note 4 for $99 only.

According to Phone Arena, the new discount available on the Galaxy Note 4 and the Galaxy Note Edge is not a limited period offer. The $99 and $199 pricing of the Galaxy Note 4 and the Galaxy Note Edge come with two-year agreement.

The Galaxy Note 4 and the Galaxy Note Edge are still quite popular. The Note Edge is first ever iteration from a smartphone maker with a single-edge curved display. Even the Note Edge was launched as a limited concept smartphone, but it won good notices from critics and the public.

The Note 4 is fitted with a huge screen of 5.7 inches that supports Quad HD resolution of 1440 x 2560 pixels whereas the Note Edge has a 5.6-inch display that supports a Quad HD resolution of 1600 x 2560 pixels.

Both the handsets are powered by Snapdragon 805 chipset. The quad-core processor of Note 4 clocks at 2.7 GHz whereas the quad-core processor of Note Edge delivers a speed of 2.5 GHz. The Note 4 is also available in Exynos 5433 chipset variant for select markets. The chipset on both the devices are supported by 3 GB of RAM.

Both feature a 16 MP rear camera and a front-facing camera of 3.7 MP. The Note 4 comes with 3,220 mAh capacity battery and the Note Edge comes with a smaller battery of 3,000 mAh capacity.

It is speculated that the Samsung Galaxy Note 4 will be replaced by the Galaxy Note 5. The South Korean tech giant is believed to be working on a larger version of the Galaxy S6 Edge called the Galaxy S6 Edge Plus. It is going to be a phablet device that will feature dual-edged curved display. As of this writing, there is no confirmation from Samsung about the successor models, but the rumors on both devices rage unabated.