Huawei's latest phones use proprietary storage cards for some reason
 

Huawei's Mate 20 phones bring some clever new features to the table, but there's one that you might not be so thrilled about: a proprietary storage format. The new handsets are the first to take NM Card, a Huawei-made design that offers the capacity...

https://www.engadget.com/2018/10/16/...d-for-mate-20/