I'm just a newbie here. I got my iPhone 3GS, iOS5, 16GB from my sister. This is actually her problem before, but she bought a new iPhone so I got this one. From iTunes, only 923.5MB of capacity are available, even when I go to Settings > General > About. This has been our problem for almost two years, I think.
Can somebody help me with this problem?

Can somebody help me with this problem?
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