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Changes to Step #2

Edit by Kyle Wiens

Pending approval

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After
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-[* black] There are a few external differences.
+[* black] There are a few external differences, reflecting the different antenna design of the new CDMA iPhone.
+[* black] In the US, Sprint and Verizon use CDMA. T-Mobile and AT&T, the other two large carriers, use GSM.
+[* black] Worldwide, GSM (which stands for Global System for Mobile Communication) is far more popular. But CDMA is still used in 40 countries, primarily in Asia.