The DataTravel plan offers 2GB of data for 30 days when roaming to Australia, Hong Kong, Indonesia, Malaysia, New Zealand, South Korea, Taiwan, Thailand and The Philippines for a flat S$15 ($10.50), or 3GB for S$20.

While roaming, customers will not need to manually search for specific networks and can instead leave their phones to connect to the strongest available signals.

“With DataTravel, we are happy to free our customers from the common constraints of overseas data usage, that are cost and accessibility,” StarHub head of product and marketing Wang Li-Na said.

StarHub will also send SMS notifications before a plan expires and depletes, and customers will be able to top up with additional 2GB or 3GB DataTravel plans. Any unused data will be carried forward for another 30 days when a new plan is activated.

The operator's move comes shortly after rival Singtel expanded its ReadyRoam mobile data roaming service to cover multi-destination roaming across 26 countries, including 11 Asian markets.

In comparison to StarHub, Singtel's base ReadyRoam service provides 1GB of data for 30 days' roaming in the 11 Asian markets for S20.

Telecomasia