2.emmc has its own memory, so clearing the contents of EMMC chip means clearing the data stored in EMMC flash memory, which is equivalent to restoring the factory settings, and the programs and information installed in the mobile phone are gone.

3. But there are essential differences between them. Restore factory settings: refers to restoring the mobile phone to the factory state. If you don't choose to keep data, it is equivalent to double clearing. If you don't keep the data, choose to format the memory card, which is equivalent to clearing it for three times. Erasing emmc: It means erasing all data of the memory card of the mobile phone.