A new survey from Consumer Intelligence Research Partners found that the number of customers switching from Android and BlackBerry handsets to the iPhone has continued to increase, Apple Insider reported. According to a previous survey, 29% of iPhone users in February had switched from an Android or BlackBerry device. The latest numbers indicate that as of April, 38% of iPhone buyers were previously Android or BlackBerry owners, and 73% purchased the iPhone 4S over an older iPhone model. The amount of users switching to Apple’s smartphone is even higher than after the iPhone 4S first launched this past holiday season, when it sat at 36%. AT&T’s iPhone market share has since fallen from 53% to 51% according to the study, while Sprint’s share dropped from 13% to 12%. Verizon’s market share among new iPhone buyers has seemingly increased from 34% to 37%.