Research agency Nielsen has published its report on the data in the U.S. smartphone market in the second quarter of this year. Operating systems Android and iOS keep unqualified leadership. To their share in total account for 86.2% of the total market. The proper accounting OS from Google accounts for just over half of the total market - 51.9%, and 34.3% - this is the proportion of smartphones from Apple. Located on the third place company RIM, with its BlackBerry OS can not be considered a competitor of any of these operating systems, because its market share is limited to only 8%. Other OS solid transition into the category of "other", because they account for less than 5% of the market. worth noting that the analysis by the Nielsen which ones prefer to users switching from one type of smart phones on the other hand, indicate that during the second quarter milking Android grew, while Apple managed to hold the position. 58.6% of all buyers bought Android, and iPhone - 33,0%. But here we must consider the peculiar life cycle of these operating systems: if the iPhone 4S in the second quarter on the market already spent nine months, the HTC One X only been on the shelves. At the same time, in the third quarter will the battle between Samsung and Apple - will be presented to the next generation of iPhone, and American consumers will have access to the Samsung Galaxy S III. It would not change the alignment between iOS and Android is obvious that their growth will continue to outpace the competition. In the second quarter growth of BlackBerry OS gained only 2.7% of the customers, and the "other", including Windows Phone - 5,8%. Assume that the output of Windows Phone 8 will radically change the situation to occur.