SIMBA recently made some updates to its list of roaming partners. One notable change is that China has been moved from Group B to Group A. This means that users can now enjoy the free 1 GB data roam in all 57 destinations.
Brunei (UNN Brunei or Progresif) is moved from Group D to B and Sain Pierre & Miquelon (SPM Telecom) was moved from Group A to Group B. You will be paying less to roam in Brunei.
Furthermore, Celcom and Digi Malaysia now support 5G roaming, which is now officially available.