Samsung always sells millions of its Galaxy devices and with the launch of bigger Galaxy devices like S and Note series products, the Korean company sells millions of these devices in just months.

The release of Samsung Galaxy S4 is also going to repeat the story of Galaxy S3 and Note 2 devices as estimations show that Samsung is going to sell close to 10 million S4 devices in the first month of its market debut.

By the end of this month, Samsung will push the Galaxy S4 smartphones in the markets of 50 countries.

"Sources predict demand within the first month of the launch will be around 10 million units and 30 million in the second quarter of 2013 as the penetration rate of smartphones continues to grow and Samsung is currently the leading brand. In addition, the Galaxy S4 has better features than the Galaxy S3, hence sales of the product are expected to exceed its predecessor," DigiTimes reported.

The Samsung Galaxy S4 is going to make its way into the U.S. market in late April and starting of May. The smartphone is going to be available on major carriers like AT&T, Sprint, T-Mobile, U.S. Cellular, Cricket and C Spire. The device will also be available on other resellers like BestBuy, BestBuy Mobile, Costco, Radio Shack, Sam's Club, Staples, Target and Walmart.

In January, Samsung had announced that its Galaxy S series products had surpassed 100 million unit sells since the release of first S series smartphone, Samsung Galaxy S.

"The Galaxy S has reached over 24 million global channel shipments, achieving 10 million of these during the first seven months after its launch in June 2010. Building on this success, Samsung launched the Galaxy S II in April 2011. This smartphone reached around 40 million shipments, achieving 10 million global channel sales in just five months," Samsung announced in Jaunary.

The Galaxy S3 had passed the mark of 40 million unit channel sales by then.