Research firm comScore recently released data which reflects the Original Equipment Manufacturer (OEM) market share in the U.S. market. The released data shows that Apple has gained slight market share with its iPhone but Samsung continues to lead in the country.

The study from comScore surveyed more than 30000 U.S. mobile subscribers for the three-month average ending Oct. 2012. The study found that the Korean smartphone maker captured over a quarter of the U.S. smartphone market share. Google's mobile operating system Android continued to lead as the top smartphone platform, with over half of smartphone subscribers using Android.

No surprises that the U.S. OEM market share has Samsung and Apple in the top of the list. Samsung continued its lead with 26.3 percent of the domestic market share, which has slightly increased by 0.7 percent.

Per the comScore study, Apple took the second spot with 17.8 percent of the OEM market share, which is a slight increase by 1.5 percent. The much awaited iPhone 5 released in September may have helped Apple to get an extra slice of the market share.

Smartphone maker LG with a 17.6 percent market share ranked third. Motorola and HTC took the fourth and the fifth positions with 11 percent and 6 percent market shares, respectively.

Android retained the top OS crown with 53.6 percent market share, which slightly increased by 1.4 percent from the last quarter.

Apple's iOS with 34.3 percent market share took the second spot. RIM remained at the third spot with Microsoft and Symbian holding the fourth and the fifth places, respectively.

Microsoft released its Windows Phone 8 (WP8) OS in October this year and Nokia and HTC have already released their WP8 smartphones. Additionally, Samsung's WP8 handset ATIV S is also expected to arrive in December this year. The release of WP8 powered devices may increase Microsoft share in the mobile OS space. It remains to be seen if the ranking change in the near future.