Taiwan will throttle 4G and 5G mobile data during Han Kuang civil-defense drills to test communications resilience

Taiwan will deliberately slow mobile internet service in 14 cities and counties during August resilience drills so people can practice coping with wartime or disaster-related network disruption. The National Communications Commission said 4G and 5G data capacity will be reduced to about 1% of normal for 30 minutes during the Urban Resilience Exercises held alongside Han Kuang drills; voice calls, text messages, emergency alerts, landlines, fixed broadband, Wi‑Fi, and dedicated networks are expected to keep working.
Why it matters: This matters because millions of residents may temporarily lose practical access to mobile internet services even though it is not a full shutdown. People and organizations in affected areas should plan around the exercise by using Wi‑Fi where possible, downloading offline resources, and confirming backup ways to communicate.

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Taiwan to slow mobile data during national resilience drills
2026.07.21 100% relevant
This article establishes a new tracked story because it is the first concrete report of Taiwan's planned, government-directed throttling of mobile data during national resilience drills.
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