When the second generation of mobile telecoms (so-called 2G) was introduced in Finland by Radiolinja (now Elisa) on the GSM standard (now the world's most common mobile technology with over 2 billion users) in 1991, the digital technology introduced data services. SMS text messaging was the first such service. The first person-to-person SMS text message was sent in Finland in December 1994. SMS (Short Message Service) gradually began to grow, becoming the largest data service by number of users in the world, currently with 74% of all mobile subscribers or 2.4 billion people active users of SMS in 2007.