案例库 · 软件与 IT · 技术决策 · 2026
这条还没译成中文，下面是英文原文。
A software change took Verizon's 5G core down 10 hrs — 2M lost calling, texting and 911
On 14 Jan 2026 a software issue in Verizon's 5G standalone core knocked out calling and texting for up to 2 million customers for nearly a day.
Verizon · 2026-01-14
怎么回事
On 14 January 2026 Verizon suffered a widespread, all-day network outage that began around noon and lasted up to 10 hours, affecting as many as 2 million customers. Users lost calling, texting and network internet service, and the failure was concentrated on newer high-end devices in markets running Verizon's 5G standalone (SA) core, suggesting the problem sat in the software layer that handles the newest traffic.
Verizon confirmed the cause was a 'software issue' and said it had 'no indication of a cybersecurity issue'. Independent analysts pointed to the likely mechanism: one analyst suspected the 5G SA core went down during a 'minor feature change' — possibly a 'fat fingers' input error that cascaded — while a Syracuse University professor believed a failed update to a Virtual Network Function (VNF) caused 'data overflows/cascading failures', explaining why service briefly resumed before failing again.
The outage had a public-safety edge that made it worse than a dropped call. Local governments warned that Verizon customers might not be able to reach 911, and police in Maryland and Louisiana noted that 911 operators could not call back if a call disconnected. Verizon apologized, saying 'Today, we let many of our customers down and for that, we are truly sorry', and offered a $20 credit to affected customers.
为什么会这样
- A software change to the 5G standalone core cascaded into a multi-hour, multi-million-customer blackout.
- The failure hit the newest high-end devices first, so the exact customers who paid for the best network were the ones left without one.
- Public-safety agencies had to warn residents that 911 might not work — the harshest possible consequence of a dropped call.
- Verizon could not say what failed until after the outage, offering only a flat $20 credit by way of explanation.
教训
A network is only as reliable as the least-tested change in it. When one 'minor feature change' can take down calling and texting for a day, change control made the decision — not the software.
后来呢
Verizon apologized publicly, said it was 'conducting a full review of what happened', and offered $20 credits to affected customers. The outage renewed focus on the fragility of 5G standalone cores and the risk that a single network change can disable 911 access for millions — including the very customers who cannot call back.
资料来源
- CNET — Verizon network outage January 2026: what happened and the likely cause
- USA Today — Verizon outage: nearly 10-hour network failure put customers and 911 at risk
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