https://www.cnet.com/news/samsung-512gb-memory-chip-announcement/

Samsung just announced that it has begun mass production of a 512GB embedded Universal Flash Storage memory chip for mobile devices, meaning that your next Galaxy phone could have seemingly endless storage.

High storage phones models currently come with 128GB or 256GB of memory, but Samsung's new 512GB chip is double or quadruple that. Samsung says the chip consists of eight 64-layer 512GB V-NAND chips, but what's interesting is that although it doubles the storage and density of Samsung's 256GB chip, it takes up the same amount of physical space.