Optus and Samsung: 470,000 Phones at Risk of Triple Zero Failure (2026)

A potential crisis is unfolding in Australia's telecommunications sector, as nearly half a million phones might be unable to reach emergency services.

Optus, a major telco, has disclosed a concerning issue to regulators: approximately 470,000 Samsung devices on its network may be incapable of dialing Triple Zero (000). This revelation comes amidst a Senate estimates hearing investigating the inability of numerous older Samsung models to connect to Vodafone for emergency calls, a problem that emerged after the 3G network shutdown.

The situation is dire, as a customer's death last month was attributed to outdated software preventing emergency calls on a Vodafone phone. The Australian Communications and Media Authority (ACMA) has taken action, with TPG blocking 7,152 affected Samsung phones and Telstra identifying over 114,000 customers with devices requiring software updates. Among these, 4,158 phones cannot be upgraded and will be blocked by January.

Telstra's website post explained that the affected phones couldn't connect to Vodafone for emergency calls when the Telstra or Optus networks were unavailable. ACMA's Cathy Rainsford assured senators that Optus is manually testing 470,000 phones, and a software update should resolve the issue for most devices.

Samsung has acknowledged the problem, stating that devices over seven years old may need replacement, while most others can be fixed with a software upgrade. The company has given users a 28-day window to update or replace their devices after being notified, or they will lose access to all Australian mobile networks.

The crisis deepens as this issue adds to the fallout from an Optus outage in September, linked to two deaths. The 3G network shutdown, intended to make way for 4G and 5G, has exposed vulnerabilities in the emergency call system. Initially, telcos focused on 3G-only devices and older 4G devices that defaulted to 3G for emergencies, but the Samsung phone issue on Vodafone was only discovered months later.

But here's where it gets controversial: Despite the rules introduced in 2024 requiring telcos to notify customers of such issues and block affected devices, ACMA is investigating two alleged breaches and has requested information from Samsung and TPG. Senator Sarah Henderson has criticized the government for not launching a public awareness campaign, emphasizing the significant public safety risk.

What do you think? Should telcos and device manufacturers be held more accountable for ensuring emergency services accessibility? Share your thoughts in the comments.

Optus and Samsung: 470,000 Phones at Risk of Triple Zero Failure (2026)
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