The Xiaomi 15 Ultra supports Refresh storage. Storage refresh works automatically while you aren’t using the device. It physically organizes your files into the smallest number of fragments reducing the lag. This helps ensure that the phone remains as smooth and responsive as when it was new, even after prolonged use.
To view this feature on your phone, please refer to the following steps:
1. Go to the [Settings] APP on your phone;
2. Find and tap [About phone];
3. Tap [Storage];
4. Swipe down to find and tap [Storage refresh].