Not going to hate or anything but I will be straight up with it.
Primarily the fact is that the Samsung Galaxy S should not be compared to the iPhone 4s. You should also include smartphone benchmarks such as the following:
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Right so factually the lower specs on the iPhone right now doesn't even matter because it still performs better than the SII.
The images on the iPhone are not of a smaller size, the forum's shrink the image and make it look distorted/out of proportion.
The iPhone battery life issue was addressed in a recent update, however for the most part it still exists. However turning off services such as ping and other backround tasks from settings help this issue a lot.
I would not be so quick to assume the iPhone batter life is poor however, since 4G LTE and larger screen drain battery, but then again, you are getting a larger screen and 4G.
Although I will be honest with you: My 3G speeds on my iPhone 4 are around 5MB/s which is more than enough to use the internet for now.
Most of Androids apps are free, however they do have adds.