Google's Android operating system continued its dominance of the U.S. smart-phone market in June, but it was Apple and its ever popular iPhone that took the top spot among actual phones sold, according to new data from the Nielsen research group.

According to June data from Nielsen, Google's Android operating system (OS) now claims the largest share of the U.S. consumer smartphone market with 39 percent. Apple's iOS is in second place with 28 percent, while RIM Blackberry is down to 20 percent.

However, because Apple is the only company manufacturing smartphones with the iOS operating system, it is clearly the top smartphone manufacturer in the United States. Other leading manufacturers include HTC, whose Android phones represents 14 percent of the smartphone market and whose Windows Mobile/WP7 devices account for 6 percent of the market; and Motorola, whose Android devices are owned by 11 percent of smartphone consumers. Samsung's Android devices are used by 8 percent of smartphone owners while their Windows Mobile/WP7 phones are used by 2 percent of smartphone owners.