MicroSD card is a very small flash memory card, and its format originated from the creation of SanDisk. Originally, this memory card was called T-Flash, and later it was called T-Flash.
It was renamed MicroSD because it was adopted by SD Association (SDA). Other memory cards used in SDA include MiniSD and SD card.
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Although sd card and tf are both flash cards, their sizes are different. The size of TF card is11x15x1mm, which is about 1/4 of that of SD card. The size of SD card is 24 mm× 32 mm× 2.1mm. ..
Now almost all mobile phones use TF cards. First, because TF cards are smaller, they are more conducive to saving space. SD cards are mainly used for MP3, digital cameras, digital cameras, e-books, AV devices, etc.