Samsung announces a solution for low- and mid-market mobile devices wanting for more built-in storage-- a "high-performance mobile memory storage" based on 128B 3-bit Embedded MultiMediaCard (EMMC) 5.0 NAND flash.

Similar technology (based on either UFS 2.0 or eMMC 5.1) is already in use in flagship devices, but as Samsung puts it now mid-market devices can also get 128GB of built-in storage through its highest density eMMC 5.0 solution yet.

Performance-wise the technology delivers 260MB/s for sequential reading (the same as eMMC 5.1) and read/write speeds of up to 6000 and 5000 IOPS respectively, sufficient for HD video processing and multi-tasking features.

Neptune, the company behind the ungainly Neptune Pine smartwatch, has ambitions to centre users' computing lives on the wrist-- the Neptune Suite, 6 pieces of hardware revolving around a wrist-worn device.

The heart of the Neptune Suite is the Hub, a wrap-around water-resistant smartwatch the company describes as "the world's first true personal computer." It features a 2.4-inch capacitive touchscreen, 3G/LTE(via nano-SIM card), NFC, wifi and Bluetooth connectivity and a 1.8GHz quad-core processor, and uses short-range 802.11ad WiGig to connect with the other Suite devices at up to 7Gbps with "non-perceptible latency."

As such, the smartphone and tablet components of the Neptune Suite-- dubbed "Pocket Screen" and "Tab Screen"-- are essentially dumb devices providing  larger (either 5- or 10-inch) displays for the Hub. For further usability one can also attach the Tab Screen to a self-explanatory "Keys" wireless keyboard.

One of the more unusual mobile phones at Mobile World Congress 2015 looks nothing like a mobile phone-- the Runcible is a circular device modeled after the pocketwatch or compass of years ago.

"Runcible is designed to help you create a more civilized relationship with your digital life," creator Monohm claims, before describing it as nothing less than "the premier device for the post-smartphone era." It runs on Firefox OS and promises a "quieter" hybrid of smartphone and wearable, combining the connectivity demanded by modern life (including LTE, wifi, Bluetooth and NFC) with simple notifications, camera, a contact list limited to 12 individuals and, perhaps aptly, a virtual compass handling GPS duties.

Samsung shows off a more premium smartphone design approach at Mobile World Congress 2015 with the Galaxy S6 and S6 edge, a pair of flagship devices replacing Samsung' usual plastic with metal and glass frames.

The pair are near-identical to each other, since both are 5.1-inch Android 5.0 handsets with 2560x1440 displays running on octa-core Exynos processors. What differentiates the S6 edge is suggested by the name-- the device has a dual-curved display curving ever-so-slightly from, well, the edges.

This means earlier rumours were right, even if the slight screen curves do not allow for the additional functionality seen in the Galaxy Note Edge.