In its core event of the year, the GSMA predicted there would be 1.2bn 5G connections in the world by 2025, and that by the end of 2020, the mobile industry would have invested about $500bn, with 5G accounting for a big proportion of that capex spend. Mats Granyrd, director general at the GSMA, told attendees: “Last year the mobile sector generated some €3.6 trillion for the global economy – that is equivalent to 4.5% of the world’s GDP. By 2022, we expect that figure to have grown to around 5%.” Big figures apart, many operators were honest that they were still seeking strong business models to justify that level of investment in 5G networks, spectrum and services. Ericsson and…