Singapore Phases Out 2G: IMDA Sets “Default Off” Mandate for All Mobile Devices
Singapore is taking a decisive step toward next-generation connectivity. Starting December 31, 2026, all mobile handsets sold in the city-state must have 2G capabilities disabled by default. This mandate, issued by the Info?communications Media Development Authority (IMDA) under the updated technical specification IMDA TS CMT Issue 1 Revision 4, marks the official sunset of legacy 2G infrastructure that has served Singapore since 1994.
Why is Singapore Disabling 2G Networks?
The 2G spectrum, primarily operating on 900MHz and 1800MHz bands, is incredibly efficient for long-range coverage but offers extremely low data throughput. In a hyper-connected nation like Singapore—which boasts one of the world's highest mobile penetration rates—these frequencies are a scarce resource. By repurposing the 2G base station spectrum for 4G LTE-Advanced and 5G NR, operators can dramatically increase network capacity and speed.
Moreover, 2G technology relies on outdated SS7 protocols, which are vulnerable to security breaches like false base station attacks (IMSI catchers). Transitioning away from 2G enhances national cybersecurity resilience .
2G Default Disablement
Effective: December 31, 2026
Requirement: 2G function must be OFF at factory settings. (User manual override permitted but not recommended)
Exemption: End-of-Life (EOL) devices discontinued before the deadline.
Emergency Cell Broadcast
Effective: April 1, 2026 (Active now)
Requirement: Support for multi-language public warnings, automatic display, and storage of alerts.
Purpose: National disaster response and public safety alerts.
Legacy Device Impact
Users still relying on 2G-only feature phones (approx. 140k users as of early 2026) must upgrade. Welfare groups like TWC2 have initiated donation drives to provide 4G/VoLTE-enabled handsets to migrant workers and the elderly .
IMDA TS CMT Issue 1 Rev 4: Technical Specifications
Published on March 6, 2026, the new IMDA TS CMT standard introduces rigorous entry barriers for device manufacturers. It is no longer sufficient for a phone to simply be "2G capable"; it must actively reject legacy network connections at startup unless explicitly enabled by a technician-level user.
Key Changes for OEMs and Importers
- Factory Default Settings: Devices must ship with 2G functionality deactivated. The user interface should not prompt users to "connect to 2G" during initial setup .
- VoLTE Mandate: To compensate for the lack of 2G voice fallback, devices must support high-definition VoLTE (Voice over LTE) to ensure clear call quality over 4G/5G networks.
- Emergency Cell Broadcast (ECB): Terminals must support ECB as defined in 3GPP standards. This allows the Singapore Civil Defence Force to broadcast alerts to specific cell towers without network congestion .
- Supplier’s Declaration of Conformity (SDoC): The SDoC form was updated on March 13, 2026. Using older versions will result in automatic rejection of equipment registration .
Impact on Operators and 2G Base Stations
While the IMDA regulation focuses on handsets, the infrastructure shift is already underway. Major telcos (Singtel, StarHub, and M1) have been granted permission to progressively decommission 2G base stations. However, unlike the phone mandate, the infrastructure shutdown is a gradual "managed retreat." The "Default Off" policy ensures that even if a 2G base station remains operational for legacy machine-to-machine (M2M) devices, mobile phones will not latch onto it, freeing up bandwidth for 5G services.
For industrial users (logistics, smart meters), 2G networks may linger for specific NB-IoT applications, but consumer voice and data traffic over 2G will effectively cease by Q1 2027.
Compliance Checklist for 2026
If you are importing or manufacturing phones for the Singapore market, verify the following:
| Requirement | Status | Action Required |
|---|---|---|
| 2G Default Off | Enforcement: Dec 31, 2026 | Modify firmware to disable 2G modem stack on factory reset. Submit updated test reports. |
| Emergency Cell Broadcast | Enforced: Apr 1, 2026 | Implement CBS (Cell Broadcast Service) in the OS. Must pass IMDA recognized lab tests. |
| Safety Standards | Updated 2026 | Align with IEC 62368-1 and lithium battery safety requirements (UN38.3). |
| Equipment Registration | Immediate | Use the new SDoC template (Rev 4). Declare compliance with 2G disablement. |
Global Context: Singapore Joins the 2G Sunset
Singapore is not alone. Japan, South Korea, and major US carriers (AT&T) have already shuttered 2G. Australia followed in late 2024. However, the "Default Disablement" strategy is unique to Singapore; it forces the ecosystem to upgrade without an abrupt kill switch, allowing critical infrastructure to transition at its own pace. According to IHS Markit, 2G will still account for roughly 11% of global subscriptions by 2030, primarily in Africa and parts of Latin America, where affordability remains key .
Conclusion
The Singapore 2G shutdown is more than just turning off old towers; it's a regulatory masterstroke to clear spectrum pollution and enhance public safety. For manufacturers, the IMDA TS CMT Issue 1 Rev 4 is non-negotiable. For consumers, it means a future of faster speeds and more secure networks. As the December 31, 2026, deadline approaches, expect to see a flood of budget 4G handsets replacing the classic "dumb phones" in convenience stores across the island.