Samsung Electronics, the world\'s largest smartphone maker, said Thursday that it has sold more than 10 million units of Galaxy S4, the latest flagship smartphone model, in less than a month since its debut. Global sales of the Galaxy S4 smartphone surpassed the 10- million mark since its launch in April 27, according to an e- mailed statement. The new model set a new record for Samsung, generating sales quicker than any of its predecessors. Sales of the Galaxy S3 reached the 10-million mark 50 days after its launch, while the Galaxy S2 and Galaxy S took five and seven months each to reach the level. Market watchers expected the new flagship model to be sold well as its archrival Apple had no plan to launch a new model in the near future. The Galaxy S4 was available in more than 110 countries and would gradually be rolled out to a total of 155 nations in cooperation with 327 mobile operators, Samsung said.