KUALA LUMPUR: U Mobile Sdn Bhd has blocked more than 265 million scam calls and fraudulent short message service (SMS) attempts nationwide since rolling out full-scale network-level scam protection across its 4G and 5G network as of December 2025.

In a joint statement, U Mobile and Cellusys said the initiative, powered by Cellusys’ advanced firewall technology, has enabled the telecommunications company (telco) to block scam attempts via screening all inbound calls and SMS at the network level, preventing suspicious communications from reaching customers' devices.