Beginning in March 2013, the HTC One was made available to mobile operators and major retailers in at least 181 countries. Manufacturing delays led to a staggered release beginning in late March, with its release date in certain markets (such as Asia and North America) pushed to late-April. Nevertheless, with around 5 million units being sold during its first two months of worldwide availability, HTC stated that the One was the most successful launch in the company’s history.