Micro-SD slot for Expandable Storage
Samsung's Galaxy S9 and S9+ both have 64GB of storage built-in. And while that's plenty for most, some will want more. Instead of spending over $1,200 for a 128 or 256GB phone, just buy a microSD card and expand storage.
Both the Galaxy S9 and S9+ take a microSD card for storage expansion up to 256GB. This way you can get a total of over 300GB of storage for photos, video, 4K video, slow-motion video and anything else you'd like.