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.
