Before revision:  To provide at least 2 Mbps per user, 4G is often the cheapest option , whereas a minimum 10 Mbps per user is cheapest with 5G non-standalone (NSA) . The cost of meeting the UN Broadband Commission target of a minimum 10 Mbps per user is estimated at USD 1.4 trillion using 5G NSA, equating to approximately 0.5 \% of annual GDP for the developing world over the next decade.
After revision:  To provide at least 2 Mbps per user, 4G is often the cheapest option to reach universal coverage . The cost of meeting the UN Broadband Commission target of a minimum 10 Mbps per user is estimated at USD 1.4 trillion using 5G NSA, equating to approximately 0.5 \% of annual GDP for the developing world over the next decade.