Xiaomi memory expansion is really useful, but the effect depends on the specific model. Xiaomi's memory expansion function can use a part of flash memory (storage) as memory, and sacrifice a part of idle flash memory, which can slightly improve the background retention rate and the speed of continuous opening of applications.

But on the one hand, the effect of this function depends on the hardware configuration of the mobile phone itself, on the other hand, it is also related to the background management strategy of the manufacturer. Some mobile phones have no effect after being turned on, such as the 8GB version of Xiaomi 1 1.

Disadvantages of memory expansion:

Memory expansion technology is useful, but it is not without cost. In essence, the performance gap between memory and flash memory is still relatively large, so it is inevitable that the phone will get stuck after the memory expansion is turned on, and frequent reading will also affect the life of flash memory.

Some brands of mobile phones will remind users that this behavior has an impact on flash memory when opening the memory expansion function. In the long run, it will definitely have an impact on mobile phones. Failure to obey will accelerate the aging of mobile phones and reduce their service life.