Dev Tools · 1h ago
Vercel Apps Fail on Some Mobile Networks Due to DPI Blocks
Vercel-hosted apps can time out on certain mobile networks (e.g., MTN Zambia) due to deep packet inspection firewalls blocking TLS handshakes. The issue is not code-related but stems from carrier-level filtering of shared Vercel IPs. Developers can mitigate it by using custom domains and a CDN proxy like Cloudflare.
Meridian48 take
This is a valuable debugging guide for developers, but the root cause—carrier DPI—is a broader internet infrastructure issue that Vercel could address on its end.
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Why Your Vercel App is Failing to Load on Mobile Networks (And How to Fix It) →
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