If it is a system problem, you can try to turn it off before turning it on.

If it is because there are many things downloaded recently, Xiaomi just has a memory expansion to try.

Take my Xiaomi 10U as an example, turn on the settings of Xiaomi's mobile phone and turn on my device as follows. Before opening, you can see in my device interface that the running memory is 12GB.

Then I opened the settings in Xiaomi's mobile phone and found that there were more settings below. Click to find the following memory extension.

We clearly see that the system will provide an additional 3.00GB of running memory after it is turned on.

Then open the extension, and there is 3GB of running memory.

Then we will return to the setup interface, and we will look at my device interface again.

The column of running memory says 12.0+3.00GB.

In other words, we now have 15GB of available memory.