All MicroSD cards at 16GB, or any other capacity, are not the same. If you check the card you'll find another small number inside a "c" (class) letter that indicates data write speed of the card.

MSD3 MSD2 MSD1

As you can see we have three different speeds for the same capacity 2, 4 & 10 MB/S and sometimes this spec could be a problem for some devices as they are not compatible. I'm not sure that this is your problem, is just a thought and something you may want to try with different class MicroSD cards if you can.