FAT32 has better compatibility. If you are not sure whether your device supports exFAT, we recommend formatting the memory card to FAT32. Keep in mind, however, that FAT32 is only supported by SD/uSD cards with capacity less than 32GB, and it does not support storing or transmitting any single file that exceeds 4GB in size.
The exFAT file system was released by Microsoft to address FAT32's inability to carry files over 4GB. Also if the capacity of your SD/uSD card is larger than 32GB, you should format it to exFAT.