QAs:
1. Why the capacity is only 29GB shows in the computer?
Answer: because of the different algorithms, Mathematically 1GB = 1000MB = 1000x1000KB = 1000x1000x1000 bytes, all the manufactor use this way to mark the capacity, that means 32GB = 32,000,000,000 bytes. But in computer algorithm, 32,000,000,000 bytes = 32000000000 / 1024 /1024 /1024 =29.8GB, so most of the 32GB micro sd cards will be real 29GB showed in the computer, and different nand flash from different manafactor will also cause differences in capacity, usually it will be 28.8-30GB real capacity shows in the computer.