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Continue to ChatColombia mantiene entrega de 3,5 GHz para pilotos 5G y delinea plan para migrar 2G y 3G a 4G https://www.telesemana.com/blog/2020/06/24/colombia-mantiene-entrega-de-35-ghz-para-pilotos-5g-y-delinea-plan-para-migrar-2g-y-3g-a-4g/