10-22-2012 02:45 PM
Hi and welcome to the forums
Check that your device OS can support the 32 GB card, and if so make sure the card is formatted correctly.
KB05461 MicroSD card sizes supported by the BlackBerry device software
KB10527 Media card cannot be read. Verify that the memory card is formatted
10-22-2012 03:00 PM
The 9900 does support a 32gb card, no problems there.
Could it be a bad card?
Do have an adapter from which you can view the card contents on your PC, or possibly reformat the card from the PC?