According to Xiaomi's introduction, this "memory expansion" function is to increase the running memory of the mobile phone by occupying 3GB of body memory into 3GB of running memory, thus ensuring more running memory space for applications. However, through the test, it is also found that if there is more than 8GB and 12GB in the running memory of the mobile phone, it is meaningless to use the "memory expansion" function, which has no effect on the fluency of the mobile phone, but it is just wasted.

Therefore, in fact, the original intention of Xiaomi's "memory expansion" function is still aimed at models with low running memory, slow response speed and unsmooth operation, which has no practical significance for high-end and flagship models.