Samsung’s flagship smartphone for 2012, the Galaxy S III, launched in the United States earlier this month and while the sleek new smartphone has seemingly been well received, supply issues could have a serious impact on launch-month sales. According to Reuters, a manufacturing glitch ahead of the European Galaxy S III launch and supply constraints ahead of the smartphone’s U.S. launch could end up costing Samsung 2 million unit sales or more in just one month.

“Samsung might have been caught off guard by the demand, not because they did not believe in their own products, but because they might have over-estimated the competition,” Gartner analyst Carolina Milanesi told Reuters. “In other words, aside from the iPhone and HTC’s One X there’s not much out there at the moment, which would have certainly helped Samsung.”

Samsung will seemingly rebound quickly from its Galaxy S III launch debacle, however — the company announced on Monday that it expects to sell 10 million Galaxy S III handsets by the end of July. BGR reviewed the Galaxy S III earlier this month and while we found it to be a terrific smartphone, we didn’t think it was a game-changer like the Galaxy S II smartphone was in 2011.