CNA Explains: What could happen to Simba customers if IMDA takes action against alleged unauthorised spectrum use?

The Infocomm Media Development Authority (IMDA) has accused Simba, one of Singapore's major telcos, of allegedly unauthorised spectrum use and other regulatory breaches. If these allegations prove true, Simba could face fines, suspension or cancellation of its licence, according to experts. While a fine would have no immediate impact on customer services, restrictions on spectrum use could affect network capacity and quality.

Simba has assured customers that their services, plans and wallet balances would remain unaffected during the investigation. The regulator alleges Simba deployed dynamic spectrum sharing technology at several locations using frequency bands authorised only for 5G in 2022 and 2023. Additionally, Simba used spectrum in the 2340MHz to 2360MHz band at 92 sites during 2023-2026 without authorisation.

The regulator also claims Simba deployed 5G indoor radio access network equipment at two locations before being authorised. A cancellation of Simba's licence would be highly unusual, experts say, with financial penalties and modifications to licence conditions more probable. Losing some spectrum rights would not necessarily force Simba to shut down, but fewer lanes would result in slower data speeds and poorer service quality, especially during peak periods.