was offering e-books from the major Finnish publishers. In 2013, Elisa acquired Sulake, the company behind the teen-oriented online community Habbo. The acquisition followed a child sex scandal where Habbo had lost half of its userbase and Sulake were in financial problems. Elisa sold the majority of Habbo to Azerion in 2018 and the rest in January 2021. In 2014, Elisa started using unlimited data as the basis for their monthly invoicing. The price was based on the data transfer speed. Soon other operators operating in Finland switched to similar pricing model. As a result, Finland became one of the leaders in the mobile data usage. In 2015 Elisa founded a startup team to accelerate startup operations. On 27 June 2018, Elisa launched 5G NR network in the Finnish city of Tampere and in the Estonian capital of Tallinn and was among the first operators in the world with their commercial 5G network. In 2018 Elisa organised "AI Co-creation Challenge" during the Slush event. The winner of EUR 50,000 award was Lifemote. In June 2019 Elisa bought Swedish Polystar Osix AB, which was providing analytics, assurance and monitoring software solutions for international mobile operators. Elisa had previously founded Elisa Automate, a startup focused on automating network using artificial intelligence. Polystar was merged with it, resulting in Elisa Polystar In fall 2020 Elisa and NENT Group known for their Viaplay brand started a common brand called Elisa Viihde Viaplay. While Elisa was in charge of sales, marketing and customer care, NENT Group's part was analytics and technology. The brand was offering the widest selection of Finnish or Nordic original drama content as well as movies, series and program for children from Finland and abroad. In September, Elisa made new deals about 5G networks with both Ericsson and Nokia. It had started the co-operation with Nokia's 5G network in 2019. Elisa told that it was planning to shut down its 3G network by the end of 2023. In March 2020 Elisa acquired a majority of US-based CalcuQuote In January 2021 Elisa bought a German-based industrial software provider camLine GmbH. and a share of Italian-based SedApta, and lated during the year majority share of Belgian-based Tenforce In April 2022 Elisa acquired Slovak-based FRINX and in August Cardinality Ltd At the end of 2022, Elisa's 5G network had population coverage of 86% in Finland and 70% in Estonia In February 2023, Elisa received a