https://www.theregister.co.uk/2019/03/14/samsung_12gb_dram/

Samsung has unveiled a 12GB cellphone DRAM module it hopes will be part of next-generation smartphones.

It was way back in April 2016 that Sammy cranked out 8GB DDR4 DRAM built with a 10nm-class process, meaning something between 10 and 19nm in practice. Now it is punching out 12GB LPDDR4X (Low Power Double Data Rate 4X) DRAM in a 1.1mm-thick package using the same process technology.