Nokia’s exclusion from AT&T’s virtualized RAN contract last month does not mark the end of the Finnish firm’s business with the US carrier – but was another significant blow to its US prospects, following its ousting from new RAN deals at Verizon. With sales in China increasingly uncertain because of geopolitics and the slowdown in Chinese 5G build-out, Nokia urgently needs to generate growth outside the world’s top two RAN markets, and this may prompt a radical reorganization of its Mobile Networks business, and even a break-up of the company. Even without the AT&T blow, which saw a $14 billion modernization and vRAN contract go to Ericsson, Nokia’s mobile business has been suffering in recent years, after its first 5G…