Android supports FAT32/Ext3/Ext4 file system. Most of the the latest smartphones and tablets support exFAT file system. Usually, whether the file system is supported by a device or not depends on the devices software/hardware.

What format does Android use for SD cards?

Note that most Micro SD cards that are 32 GB or less come formatted as FAT32. Cards above 64 GB are formatted to exFAT file system. If you are formatting your SD for your Android phone or Nintendo DS or 3DS, you will have to format to FAT32.

What filesystem does Android use?

1 Answer. Android originally used YAFFS2 as the file system. After Android 2.3, the file system became ext4 . YAFFS2 is usually used for NAND flash in embedded systems such as mobile phones.