Apple''s U.S. iPhone User Base Overtook Android in June Quarter, Now Accounts for More Than Half of All Smartphones Apple''s iPhones have overtaken Android devices to account for more than half of all smartphones used in the United States, according to data from Counterpoint Research (via Financial Times ). The active installed base of iPhones passed the 50% landmark in the quarter ending in June, while around 150 other mobile brands using Google''s Android operating system, led by Samsung and Lenovo, accounted for the rest. "Operating systems are like religions — never significant changes. But over the past four years the flow has consistently been Android to iOS," said Counterpoint''s research director, Jeff Fieldhack. "This is a big milestone that we could see replicated in other affluent countries across the globe." Compared to annual sales, the active installed base is an even more significant competitive marker representing Apple''s slow burn in the smartphone market, as it takes into account users brought into the Apple ecosystem through the used phone market as well as those who use iPhones that were purchased years ago.