Hillary K. Grigonis is a tech writer, photographer, and licensed drone pilot. With over a decade of experience geeking out over the latest tech, she's an expert in cameras, drones, computing, and ...

If the microSD card is unreadable through a peripheral device, the card may use an incompatible file system, such as NTFS, or it may not be formatted at all. Data corruption could also be the culprit.