https://wccftech.com/huawei-mate-20-pro-use-nano-memory-not-microsd/

Huawei is planning to shake things up in the industry with its bold moves. Along with unveiling the new Mate 20 flagship series, the Chinese smartphone maker announced a new kind of expandable storage that it has named Nano Memory (NM). It replaces the conventional microSD card on the new high-end phones.

Huawei says that the NM card is 45 percent smaller than the microSD card, which means it would help free up some space. They are the same size as a nanoSIM card and you can trade off one SIM for an NM card. The cards will come in 128GB and 256GB storage options and are said to offer speeds up to 90MB/s. Beyond that, not a lot is known about the new cards.