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Mobile carriers shift CAPEX focus from networks to AI data centres

South Korea’s three mobile carriers are shifting capital spending away from base stations and other traditional networks toward AI infrastructure as 5G rollout stabilises and demand for AI data centres rises. SK Telecom and KT cut network-focused CAPEX in the first half, while LG Uplus increased spending tied to its Paju AI data centre. The companies are rolling out expansion plans and reporting rising AI data centre revenue, while maintaining some network investment for 5G standalone and future 6G preparation.