The OnePlus 11, just like its predecessor, doesn't have a microSD card slot for storage expansion. Instead, you get to pick between either 128GB or 256GB of storage. It is worth noting that only the unit with 256GB storage uses UFS 4.0, whereas the base variant with 128GB storage uses UFS 3.1. UFS 4.0 storage is the newest memory standard that's faster and more energy efficient, and you can learn more about it in our UFS 4.0 storage guide.