1 memory, the same as the computer's RAM. Early mobile phones were 5 12M, but now they usually have 2-3G memory. The difference between mobile phone memory and computer memory is that the mobile phone memory is always powered on, so the contents inside will not disappear, the memory runs fast, and the core parts of commonly used software will be transferred to the memory for execution.
2 Mobile phone has built-in flash memory. Generally, some mobile phones have built-in flash memory, and the capacity is between 8g and 32g. Generally, they will bring their own 16G flash memory. But if they can't expand the flash memory (that is, they can insert TF cards), some machines can carry 32g or 64G flash memory at a time.
3 Mobile phones are externally connected with flash memory. Many mobile phones can expand the flash memory by inserting an external memory card into the flash memory card slot (usually TF card), which generally supports 32 G. Now some mobile phones can also support128 G.
If the memory card of the mobile phone has a large space, there are two situations. One is in Android. Before Android system 2.2, many programs would be installed in RAM by default and could not be moved into the built-in flash card (SD card). Android uses RAM in a different way from windows. In Android, RAM can be used effectively and software can be opened quickly. Android can use RAM very effectively. In Android system, process and program are two different things. Programs are always stored in the system, but no process "runs" in the background, so it will not occupy system resources. All programs remain in memory and can be started back to the previous state more quickly. When your memory runs out, the system will automatically help you kill unnecessary tasks. Initially, in order to ensure the security and stability of the software, Android installed the program into internal storage by default. At that time, the memory space quota was relatively small, and even if the SD and TF cards had large space and insufficient memory space, software could not be installed. 2.2 The programs designed in the future will generally be directly installed in the flash memory card, thus avoiding the occupation of RAM. At this time, the lack of storage space is more likely to mean that there is a lot of space on the top 3, while the space on the top 2 is insufficient. For example, in the early Redmi, the 4G built-in flash memory card was divided into 800M for 2, and the rest was 3. At this point, there are the following solutions:
A can use mobile phone optimization software such as 360 to clear unused caches and programs and make room for 2 miles. If it is a MIUI system, you need to check whether the system storage is zero to make room for the system storage. There are ways to modify system parameters online, so that external flash cards can replace built-in flash cards.
B You can make room by turning the program from 2 to 3, but some mobile phones don't support this function. Android system can enter the program and check the programs that occupy a large space one by one. Every program has an option to clean up the data. Click on it, and the space occupied by the data will be cleared. However, it should be noted that after cleaning up, all the data and programs before you log in will no longer exist. IPHON phones, such as IP6, can open the settings-> General->; Dose. This list shows which items occupy storage space and which items occupy the most space. Click the button on the right side of the list to see the details, and you can also delete some unnecessary items here.
Make room by transferring MP3 or video from 2 to 3, or simplifying the program in 2. IPHONE can use ITUNES to export photos and videos, and then delete the space.
D You can quickly restore the phone to the memory state of the new machine by restoring the factory settings, but you should make various backups before doing so!