SIM Technology Group's (HKG:2000) revenue from its core business slipped 28% to HK$28 million in January from HK$38.7 million a year prior, according to a Monday Hong Kong bourse filing.

The mobile communications company recorded total revenue of HK$30.9 million in the month, down 41% from HK$52.5 million in December 2025 and 27% lower than the $42.4 million reported in the same month last year.