OnePlus has a phone that changes color, and it actually sounds useful

OnePlus announced a new concept phone, somewhat unimaginatively called the OnePlus 8T Concept. 

But the device has a feature we haven't seen on a smartphone before: It changes color. 

More precisely, the back of the phone has a pattern that changes from blue to silver and vice versa. OnePlus calls the technology Electronic Color, Material and Finish (ECMF), and it consists of a special coating that contains "metal oxide in glass," which changes colors when different voltages  are applied to it. 

The cool part of ECMF is that, when combined with mmWave technology (the same tech used in 5G networks), it can be tied to various functions of the phone. For example, the color could change when you have an incoming call or message. OnePlus has some sci-fi ideas on how else the tech could be used — such as replicating your breathing — but even the incoming call thing sounds plenty useful to me.  Read more...

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