A new Good Technology study (PDF) on Friday revealed that the Verizon iPhone may have given iOS a jump in use in the enterprise. iOS averaged 70 percent of activations in thousands of companies during the winter, which Good credited not only to having the second carrier choice but to the $49 iPhone 3GS at AT&T. The growth pushed Android down to 30 percent of all new devices on Good's service from 35 percent just in the fall.