iFixit is in the process of completing its teardown of the Verizon iPhone 4, and has found several curious differences between it and the GSM model. Most notably, the Qualcomm MDM6600 cellular communications chip inside the new handset—the same as found inside the Droid Pro world phone—is capable of handling both HSPA+ data rates of up to 14.4 Mbps and CDMA2000 1xEV-DO Rev. A/Rev. B, meaning that it is technically able to support both…