More than 2 billion mobile-phone subscribers will purchase digital goods by phone by 2013, according to a report from United Kingdom-based Juniper Research Ltd. Juniper expects mobile-phone users to make at least two payment transactions per month for digital goods by 2013, according to the report. Juniper categorizes digital goods as any content bought by mobile phone and delivered to the phone, such as ringtones, e-tickets, games and music. Juniper predicts nearly half of mobile users will buy digital content at least once by 2013. Western Europe and China "will account for over 50% of the total digital goods gross transaction market value by 2013," the report says. "Many digital-content goods and services are becoming basic 'must-haves,' particularly in the sub-35 age group," report author Howard Wilcox says. Last month, Juniper predicted in a separate report that the value of contactless Near Field Communication purchases initiated with mobile phones will exceed $75 billion worldwide by 2013 (CardLine, 7/16).