How much GB do I have on my iPhone? How can I tell?

My capacity is 28.5 and my available is 27.7.

Version: 6.0.1

Added (1). I have an iPhone 4G

Added (2). I have an iPhone 4G

Your answer is in your description.

You answered your own question

you have 27.7gb available, so thats how much you have avilable
your total capacity capable is 28.5gb

this means you are currently only using about 0.8gb

You have 27 gb left and you have 700 mb left you can go to setting >generall > about to find more info on what is using your memory

Look on the back on the bottom it will be boxed in

You have 32 gb