Singapore, March 20 -- Singapore's Infocomm Media Development Authority (IMDA) has launched an investigation into mobile network disruptions affecting Singtel, the island nation's largest telecom operator, between March 16 and 18.

The regulator said on March 19 that it takes the incidents seriously and will take firm action if any lapses are identified.

Over three consecutive days, Singtel customers experienced difficulties connecting to the network. An eight-hour outage on March 16 left users with "zero bars" of signal and disrupted essential services, including payments, ride-hailing, and food delivery.

Unstable connectivity persisted into the following day, though in a smaller area, bringing the total disruption to more than 30 hours....