As 5G networks continue to spread across the world - faster than some predicted, but slower than others might prefer - physically upgrading existing 4G towers has proved to be a significant bottleneck, leading to massive expenses, permitting controversies, and shortages of cell tower climbers. Today, Nokia released an alternative that will help carriers rapidly convert 4G infrastructure to 5G: a software update that can convert 5 million existing 4G tower radios to 5G without the need for tower climbs or site revisits.
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