Singapore’s SIMBA Telecom could lose its operating licence after regulators alleged that senior management approved the unauthorised use of mobile network frequencies.

The Infocomm Media Development Authority (IMDA) issued a notice to show cause on October 23, according to an October 26 disclosure by SIMBA’s Australian parent, Tuas Limited. Possible sanctions include fines, restrictions on spectrum rights, and suspension or cancellation of the company’s telecommunications licence.

No suspension or service shutdown has been ordered. SIMBA has until November 16, 2026, to respond, leaving subscribers and businesses awaiting the regulator’s next decision.

Alleged spectrum breaches put SIMBA’s licence at risk

The October 26 disclosure details six allegations involving unauthorised spectrum use, equipment deployment and regulatory compliance.

At approximately 133 sites, SIMBA allegedly used dynamic spectrum sharing intermittently during 2022 and 2023.…