Apple's iPhone 7 line is increasingly becoming the smartphone of choice for that company's customers, according to a new study.

The iPhone 7 and iPhone 7 Plus accounted for 81% of all U.S. iPhone sales during the three-month period ending July 1, Consumer Intelligence Research Partners (CIRP) said on Tuesday. Individually, the iPhone 7 accounted for 47% of total Apple smartphone sales while the iPhone 7 Plus accounted for 34%.

According to the CIRP data, the iPhone 7 line has done a better job at this point than the iPhone 6s line of attracting customers away from older Apple smartphones. During the same quarter in 2016, for instance, 34% of iPhones sold were older models. In this latest quarter, just 19% of iPhone sales were legacy versions, according to CIRP.

However, CIRP partner and co-founder Josh Lowitz noted that during the past three quarters, between 14% and 17% of iPhone 7 and iPhone 7 Plus buyers were formerly Android owners.

"With lengthening upgrade cycles and a growing percentage of owners with the most recently released models, continued platform switching will be important to the success of the next iPhones,” Lowitz said in a statement.

Source: fortune