Samsung has something unusual in store for Mobile World Congress 2015 Bloomberg reports-- the next Galaxy smartphone flagship will come in two models, one of which will feature "a display covering 3 sides."

How can a display cover 3 sides? Through an evolution of Samsung's own curved-edge OLED displays, of course. The Galaxy Note Edge has such a display, if one wrapping around a single side of the device.

The unnamed sources add the two handsets also feature "all-metal bodies," 5.1-inch displays and the "most advanced" processors Samsung can make (meaning next-generation Exynos), all in a bid to win back high-end mobile market share lost to the iPhone 6.

Corning announces a type of glass the company claims is tougher than the latest Gorilla Glass iteration while featuring scratch resistance that "approaches" sapphire-- the so-called "Project Phire."

“We have developed a new product that will provide sapphire-like scratch resistance while maintaining the legendary toughness and break resistance of Gorilla Glass,” Gorilla Glass Technologies James P. Clappin says at the company's annual investor meeting.

Sapphire was supposed to be the latest wonder material in mobile displays, yet it is not problem-free, being brittle and reportedly hard to work with. This explains why Corning's Gorilla Glass unit sticks with glass and related composites, even as investors demand the company starts using the new material.

Nvidia launches what it describes as a "mobile super chip" at CES 2015-- the Tegra X1, a successor to the K1 mobile device processor featuring 256 GPU cores and an 8-core 64-bit CPU built on Maxwell architecture.

The company claims the Tegra X1 is the first mobile chip to reach throughput of up to 1 teraflop, making it as fast as a supercomputer from 2000-- if within a smaller and far more energy efficient package. To show off the chip's capabilities Nvidia showed off a real-time Unreal Engine 4 demo, with complicated 3D rendering demanding all of 10W to power.

Furthermore the chipset handles 4K video at 60Hz and 1080p video at 120Hz.

Remember the Yotaphone, the Russian smartphone with an e-ink display on the back? Its makers launched got an upgrade in the shape of the Yotaphone 2, a handset featuring the same concept, if with upgraded specs.

The Yotaphone 2 features 2 displays-- a 5-inch 1920x1080 AMOLED display on the front for primary use, and an always-on 4.7-inch e-ink display on the back for checking of notifications and customisable widgets. Further uses for the e-ink display include "YotaMirror" (enables the use of any app on the second display), "YotaSnap" (saves anything from the primary screen on the secondary display), "YotaCover" (puts a custom image on the second display) and a reading app.

BlackBerry returns to its roots as it launches a literal smartphone throwback-- the BlackBerry Classic, a "no-nonsense" handset featuring a physical QWERTY keyboard and a design straight out of yesteryear.

It also features a touchscreen, specifically a 720x720 3.5-inch number allowing for one-handed use together with the keyboard, as well as a trackpad and physical navigation keys. Inside are a 1.5GHz dual-core Qualcomm processor, 2GB RAM and 16GB storage (expandable to 128GB via microSD slot), as well as 8MP/2MP front- and rear-facing cameras.

“We listened closely to our customers’ feedback to ensure we are delivering the technologies to power them through their day-- and that feedback led directly to the development of BlackBerry Classic,” BlackBerry CEO John Chen says. “It’s the secure device that feels familiar in their hands, with the added performance and agility they need to be competitive in today’s busy world.”

Finland-based Circular Devices is the next company to take on Google's Project Ara and the mysterious Vsenn in modular smartphones with the PuzzlePhone, a charmingly named upgradeable device.

The PuzzlePhone breaks down the smartphone into 3 modules-- the Spine (display, speakers and basic structure), Heart (battery and secondary electronics) and Brain (processor and camera). Modules are built on an open source hardware standard, allowing OEMs to freely build modules according to customer demand.

The OS of choice is a forked Android version, but the makers are looking into supporting alternative operating software.

Following the dropping of the Nokia name Microsoft reveals the first own-brand Lumia smartphone-- the Lumia 535, an entry-level device featuring a 5-inch display and a 5MP front-facing camera.

It carries a 960 x 540 resolution display, 1.2GHz quad-core processor, 8GB storage (expandable via microSD slot) and 1GB RAM inside plastic casing complete with colourful removable back cover. The OS of choice is, obviously, Windows Phone 8.1, and Microsoft includes features such as the Action Center, Word Flow, Cortana, Skype and One Note.

LG Display presents what it claims is a 5.3-inch 1920 x 1080 resolution smartphone LCD panel with the narrowest bezel in the world-- 0.7mm, narrower than the 0.8mm thickness of a credit card.

It features what the company calls "Neo Edge" technology, which uses an adhesive (instead of double-sided tape) to attach and seal the area and edges of the panel's circuit board and backlight unit. LG says this allows for a narrower bezel, blocks light leakage, water- and dust-proofs the display, prevents the corrosion sometimes caused by double-sided tape and even "dramatically" improves panel durability.

Another LG Display technology inside the panel is "Advanced In-Cell Touch (AIT), a means of embedding the touch panel inside the LCD module.

The good news for customers is the display is not simply an advanced company prototype-- mass-production is set to start from November 2014, probably (certainly) for use in the next LG flagship device.