Kicking off Apple’s conference call announcing its record-breaking numbers for Q2 2015, Apple CEO Tim Cook reported that the company had its strongest March quarter ever, with 27% revenue growth overall, and 55% year-over-year growth in iPhone revenue. Cook also noted that Apple has seen a higher rate of switchers to the iPhone than in previous iPhone cycles, cited strong success of the iPhone in emerging markets with 63% year-over-year growth,…