They are all models for different markets and/or different providers or international versions. Some of them have 8mpix camera, some 13mpix, also if I'm not mistaken on some there is a microsd slot. Layout of camera, flash and speaker on backside is also different.
So differences in radios (regarding networks), cameras, card slots and layout practically means that you cannot use the same roms and cases on every model.
“Today while browsing XDA,I’m going tocheck to seeif my favorite ROM has been updated–but … more
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