In which cases 32 GB of memory is better than 128 GB or why your smartphone runs slower


In which cases 32 GB of memory is better than 128 GB or why your smartphone runs slower
Even if the smartphone is not overloaded with apps and has a powerful processor, it can run slowly. Because there are cases depending on the type of internal flash memory installed in the device.
Every user wants apps and files on their smartphone to open faster. Typically, they buy a smartphone with a powerful processor, a large amount of RAM and more gigabytes of flash memory. However, other equivalent parameters do not take into account that a smartphone with 32 GB of flash memory will run faster than a 128 GB device.
Features of flash memory
When manufacturers report the speed at which flash memory reads and writes data, they typically indicate the speed of data exchange over a large volume.
But the peculiarity of apps on smartphones is that they do not write large files. The typical operation of applications consists of operations of 4-16 kilobytes on small memory blocks. This is a much heavier mode than reading or writing large amounts of data.
If the flash memory on a smartphone cannot provide high speed of operation in small blocks, a powerful processor and a large amount of RAM will not help. Therefore, for example, replacing a mechanical hard drive in a computer with an SSD (flash memory) will significantly speed up the performance of the device.
Flash memory speed for applications
Memory cards such as microSD ( are very suitable for exchanging large amounts of data (video, large files), but not for working with small blocks, i.e. applications. For this reason, we once emphasized on our channel not to copy applications (e.g. Telegram) to an external memory card (microSD) that should run continuously and smoothly.
The internal memory of smartphones uses flash memory of YEMMC and UFS types. In short, EMMC is slow and cheap, while UFS is fast and expensive. Each of these standards has several generations, which differ in speed.
YEMMC flash memory is very similar to the SD format and is actually a chip-shaped SD memory on a smartphone board. Therefore, EMMC has the same problems as SD when working with small blocks. The latest version of the eMMC 5.1 has a speed of 125 MB / s when working with large amounts of data and 4 MB / s when writing 7.16 KB blocks. In 2019, an improved eMMC 5.1A was introduced.
Universal Flash Storage (UFS) memory has been gaining popularity over the past few years. The first version of UFS 1.0 was developed in 2011, while in 2018 it introduced UFS 1801 with a large data write speed of 4 MB / s, and in 137,5KB blocks - 3.0 MB / s. The popular UFS 2.1 memory today provides 260 MB / s for writing large amounts of data and 4 MB / s for writing 140KB blocks.
First-generation UFS memories made file copying speeds three times faster than eMMC. Another difference between UFS and eMMC is that the former can read and write data at the same time, while the latter can read or write only.
Examples of smartphones with slow but large memory: Huawei P30 Lite (128 GB eMMC), Xiaomi Redmi Note 8 (128 GB eMMC), Samsung Galaxy A70 (128 GB eMMC), Xiaomi Redmi Note 7 Pro (128 GB eMMC).
Examples of smartphones with fast but small memory: Samsung Galaxy S8 / S9 (64 GB UFS 2.1), Xiaomi Redmi Note 8 Pro (64 GB UFS 2.1), Samsung Galaxy A51 (64 GB UFS 2.0), Xiaomi Mi 9T (64 GB UFS 2.0).
To find out the type of memory installed on your smartphone, use this site:

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