The POCO X2 (6G + 128G) supports extended storage of a memory card with the largest capacity of 256G.
For your reference, here are some tips for using a memory card:
1. Using a memory card (also known as a microSD card) on a smartphone can greatly expand its storage capacity, allowing you to store more photos, videos, music, and apps;
2. Choose a memory card with an appropriate speed class (Class 10/UHS-I or higher) for smoother performance, especially when using it for app storage or recording high-definition videos;
3. Regularly back up important data stored on the memory card to avoid data loss in case of card failure or loss.