Question

How do I use a micro SD card?

Answer 1

Some phones have slots for memory cards, usually "microSD" cards.
...
Use an SD card

1. Open your phone's Settings app.
2. Tap Apps.
3. Tap the app you want to move to your SD card.
4. Tap Storage.
5. Under "Storage used," tap Change.
6. Pick your SD card.
7. Follow the on-screen steps.