I am speaking about an external SD card, attached by USB C cable; not any internal SD card.
I realize that access speed would not be great, but I am just looking for a cheap way to carry around 256gB or so in my pocket, for quite infrequent access to large files.
Can my Android 7 device recognize that external storage, either alone, or with help of an app?
[Update] The device is a ULEfone Armor 2. I would want to use a USB C cable to connect to an external SD card reader (unless anyone knows of a cheaper way to connect lots of external storage (physically, not requiring network access))