Singtel mobile outage affects thousands as restoration encounters further delays

Singapore's largest telecommunications operator, Singtel, suffered a significant mobile service outage on Monday, 16 March 2026, affecting thousands of users across the island and disrupting payments, mobile data access, and voice calls for several hours.

Data from Downdetector, which tracks service disruptions by collating user-submitted reports, illustrated the sudden and severe nature of the outage. The platform recorded no Singtel-related reports through the previous evening and into the early hours of 16 March, with the tracker flatlined until shortly before 10.30am.

Reports then surged sharply, climbing to a peak of just over 5,000 at approximately 11am before a partial decline. A secondary spike of around 2,200 reports followed at roughly noon, suggesting that services had not stabilised after initial rectification attempts, consistent with Singtel's later disclosure that restoration had itself encountered technical complications.

By mid-afternoon the volume had eased considerably, falling to approximately 300 to 400 reports by 3pm onwards. The Downdetector chart, captured at 4.08pm, showed the curve continuing to flatten, though reports had not returned to zero, indicating that some users remained affected hours after the outage began.

The shape of the Downdetector graph — a near-vertical spike from baseline to peak within a matter of minutes — pointed to a sudden network-level failure rather than a gradual degradation, corroborating user accounts that described connectivity cutting out abruptly without warning.

Singtel's response

Singtel acknowledged the disruption at about 11.15am in a Facebook post, confirming that some customers may be experiencing issues with their mobile services and that its engineers were investigating.

The company advised customers to switch their devices off and back on to help restore connectivity, and apologised for any inconvenience caused.

In an update at 12.01pm, Singtel said its engineers had identified the issue and that "rectification measures have been activated," asking customers to "bear with us as services stabilise." The post again advised restarting devices to help restore connectivity.

At 1.18pm, the company said services were "progressively being restored." However, a further update at 3.28pm disclosed that restoration had itself run into difficulty.

"During restoration, we encountered some technical issues which has resulted in a delay," Singtel wrote. "There is no evidence to suggest it is a cyber-related event. We will continue to provide updates in due course."

User frustration mounts

By 4pm, Singtel's Facebook posts had attracted thousands of comments, with the volume of responses underscoring the breadth of disruption across the island and beyond.

The advice to restart devices drew particular frustration from users who reported that the workaround was ineffective.

One commenter said he had restarted his phone more than ten times without success, while another said she had done so more than an hour before without result. Several noted they had also removed and reinserted their SIM cards to no avail.

One user wrote that after restarting his phone, connectivity returned briefly before dropping again within seconds, describing the experience as futile. Another said she had tried switching off the device, removing her SIM, and toggling flight mode without success, and was left relying on a nearby restaurant's Wi-Fi to stay online.

A commenter who identified himself as a private hire driver said the outage had rendered him unable to work. Another driver, identified only by a partial name, wrote that without network access he could not accept ride bookings or navigate. A third said Singtel subscribers working as platform drivers had been affected from approximately 10.30am.

Users reported being stranded in a range of situations. One said he was unable to pay for a haircut after the outage hit, while another described an awkward encounter at a food stall after being unable to complete a cashless transaction. A third said he had been unable to order a Grab meal and was unsure when services would resume.

The disruption to digital payment infrastructure featured prominently in the complaints. One user said she had been unable to use CDC vouchers. Another was reportedly left stranded at a supermarket unable to pay. One user wrote that he owed a food stall S$3.70 after the operator had agreed to let him pay the following day.

Several users abroad also reported being affected. Commenters in Bangkok, Fukuoka, Kuala Lumpur, Malaysia, Australia, China and other locations said their roaming services had failed entirely, leaving them unable to navigate, make payments or contact family and colleagues. One user said she had been in an SOS state on her phone while overseas, causing significant alarm.

A handful of users reported a partial workaround: switching their network preference manually from 5G Auto to 4G appeared to restore data connectivity for some, though not all, and voice calls remained unavailable for many even after doing so. One user warned that restarting the device could make the situation worse, as it could result in losing both data and calling capability, rather than just one.

Calls for compensation and regulatory scrutiny were widespread. Multiple commenters demanded bill waivers or rebates for March. One user asked Singtel directly how it intended to compensate subscribers given its practice of charging late payment fees.

Another called on the Infocomm Media Development Authority of Singapore (IMDA) to investigate and hold operators accountable. One commenter noted the irony of Singtel's 5G marketing in light of the outage, while another recalled the 2024 Optus network outage in Australia as a comparable case study in systemic telco vulnerability.

Some users said the outage had prompted them to reconsider their telco subscriptions, with several noting they were using backup SIM cards from rival operators to access the internet and post their comments.

GOMO subscribers affected

Some subscribers to GOMO, a mobile virtual network operator and wholly owned subsidiary of Singtel, also reported a loss of network access during the outage.

At least two users described connectivity failures on GOMO's network in a Reddit thread on the Singtel disruption, though other commenters reported no issues with the service.

Payments ecosystem disrupted

Payment services group NETS flagged the broader commercial impact of the outage in a Facebook post at 12.35pm.

The company said the Singtel connectivity issue may affect some transactions on NETS terminals and QR payments, and confirmed it was working closely with Singtel to resolve the situation. NETS said at around 2pm that the issue was progressively being resolved.

A pattern of disruptions

The outage is the latest in a series of service failures affecting Singtel's network. In November 2025, a mobile service outage affected Singtel customers for approximately six hours, with the first reports recorded at about 3pm on 18 November 2025. Singtel confirmed at about 10pm the same day that mobile connectivity had been restored.

A more serious disruption occurred in October 2024, when an unprecedented islandwide failure of Singtel's telecommunications network rendered the hotlines of the Singapore Civil Defence Force and police, as well as those of hospitals and banks, unreachable.

The telco was fined S$1 million over that fixed-line outage incident, which affected some 500,000 users for more than four hours.