Motorola teases rollable smartphone concept

Motorola is dipping into the rollable smartphone market with a new concept. The phone starts out as a pocketable four inches high, and when you click on a button, this OLED panel expands to a more typical 6.5 inches. It takes another click to bring it back to its original form. The phone is usable at both sizes and the content on the screen adapts to the size.

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OPPO reveals rollable handset and AR glasses concepts

At this year's OPPO Inno Day, the Chinese company unveiled two new concepts it is working on. One is a smartphone with a rolling screen, and another is a set of augmented reality glasses. The OPPO X 2021 is the company's newest concept phone, which it claims is the result of its research and development on flexible displays. It comes with a 6.7-inch screen size as a smartphone, but it can expand to a more square, tablet-like 7.4-inch panel.

OPPO claims it developed its own power train, structural plate, and screen laminate to ensure the X 2021 is durable. 

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This is what the OnePlus Concept One looks like in black leather

A OnePlus employee shows off a black leather concept phone that's based on the Concept One phone the company revealed at the Consumer Electronics Show in Las Vegas earlier this month. Yes, the one with the "disappearing" rear cameras. It's the same as the McLaren concept, but it's all black and featuring a leather case that seems chunkier than the other concept. It's a sleek-looking device we actually wish OnePlus would eventually use for future phones.

Vivo pushes boundaries again with Apex concept phone

Vivo made a pretty big splash at CES early last month with its work with Synaptics by putting the fingerprint reader on the phone’s OLED display. The Chinese company looks to steal the spotlight yet again at Mobile World Congress with the new concept phone it’s showing off. Called the Apex, this nearly bezel-less phone has what Vivo is describing as a “half-screen in-display fingerprint scanning technology.” However, as The Verge points out, it’s more like taking up a third of the screen, which still isn’t bad idea. For extra security, sometimes you can enable the input of two different fingerprints to have it unlock the screen.

But what happens to the other key sensors you find out the phone? Vivo’s decided to make this come out at the top of the device like a periscope or pop-up flash when you turn the selfie camera on. A pretty nifty move. It takes less than a second for it to get ready for use. As for the earpiece speaker, Vivo’s approach is to make the entire screen vibrate itself like a speaker so you can hear calls even without completely holding the device close to your ear. Vivo says it doesn’t have plans to release an actual device based on this form but it does show us the possibility of this happening and almost completely bezel-less phones being in our near future.