16GB memory card, ive used 2GB and yet have 14GB of free space, how can i use that 14GB and why is it saying low of space on sd card??? im using my 16gb memory card as to store all my apps on etc.. as my internal memory is too full so i chamged my sd card to default storage, but now as i have been using it it says storage space is getting low... but when i check it i therefore have 14gb left in total space i can use but it wont let me ... that's heaps of space I can use, I've tried moving apparently from sd to phone but internal is too full so I can't... I don't see how I need to do that anyway as I've only used up 2gb on sd and yet have 14gb I can use but why is it saying low on storage space on my sd? And how can I go by using the other 14gb ?
This may be expected, depending on what phone you are using.  The original standard of SD card readers had a 2GB limit on them.  These readers could read cards that had more space, but only had enough memory registers to read the first 2GB of them.  Sometimes a firmware update can increase this from 2GB to 4GB, but it's extremely rare.

From the wikipedia article on the SD standard:


Capacity
SDSC (SD): 1 MB to 2 GB,
   some 4 GB available.
SDHC: >2 GBs to 32 GB
SDXC: >32 GB to 2 TB,
   some 32 GB available.