Released January 2020, identified by model numbers SM-A015F, SM-A015F/DS, SM-A015G, SM-A015G/DS, SM-A015M, SM-A015M/DS, SM-A015T1, SM-S111DL, SM-A015V, SM-A015A
From what I have read you phone has expandable storage
This means that if you buy a micro SD card with your desired storage(Max 512GB) you can expand it by inserting g it into your phone(usualy in the sim tray)