Xiaomi claims a number of firsts with the Mi Mix Alpha-- a foldable smartphone featuring a "Surround Screen" with a 180.6% screen-to-body ratio, as well as a 108MP camera able to capture 12032 x 9024 resolution photos.

The Mi Mix Alpha builds on previous Xiaomi experiments in Full Screen Display smartphones, such as the first Mi Mix device. The foldable take on the concept promises construction in a "one-of-a-kind" combination of titanium alloy, ceramics and sapphire, and has the display make nearly the entirety of the front, side and back. The company says the display can withstand the stresses brought about by bending, while a durable protective layer brings further strength.

Sony skips a few generations at IFA 2019 as it announces the Xperia 5-- a followup to the flagship Xperia 1 featuring a display in the same 21:9 aspect ratio, if within a "relatively compact" body.

The Xperia 5 was teased to be small enough to fit "in the palm of your hand," and as such is smaller handset compared to other flagship smartphones. It features a 6.1-inch 2560 x 1080 resolution "CinemaWide" AMOLED display complete with HDR and the upscaling of standard dynamic range content, and includes Dolby Atmos support via stereo speakers.

Motorola wants to combine the smartphone with the action camera as it announces the One Action-- an addition to the mid-range One series featuring a rear-facing camera with a a 117-degree field of view allowing for GoPro-style shooting.

At first glance the One Action is similar to the rest of the One range, with a 6.3-inch 1080 x 2520  resolution LCD display complete with hole-punch cutout for a 12MP front-facing camera, even if the unusually tall 21:9 aspect ratio makes it stand out at least a bit. It carries a 2.2GHz Samsyng Exynos 9609 processor, a Mali G72 MP3 GPU, 3500mAh battery with USB-C 10W charging, 4GB RAM and 128GB storage (expandable via microSD). The OS of choice is, as the name might suggest, Android One.

Samsung sets to further push smartphone photography with the 108MP ISOCELL Bright HMX-- an image sensor the company claims is the first to go beyond 100 million pixels, a resolution equivalent ot a high-end DSLR camera.

Developed in collaboration with Xiaomi, the sensor promises "extremely sharp photographs rich in detail," even in extreme lighting conditions. It comes in a large 1/1.33-inch size, allowing it to absorb more light in low-lit settings, while pixel-merging Tetracell technology allows the sensor to imitate big-pixel sensor. The result, Samsung says, is brighter 27MP images.

A Smart-ISO mechanism sets the level of amplifier gains according to illumination levels, and switches to a low ISO in case of bright conditions and to high ISO in darker settings to reduce noise. The sensor also supports video recording at resolutions up to 60K (6016 x 3384) at 30fps.