New photographs taken purportedly taken inside a Foxconn factory in Brazil suggest that Apple is building at least some iPhone 4 models in the South American country. The photos, posted online by Gizmodo.com.br, show the front plate that appears to be identical to that of the iPhone 4, as well as a Foxconn quality control form, which lists the device as model “N90A”—the current iPhone 4 is model N90—and notes that this particular…