Hi Cpc, if you've purchased for DataTravel and it's not working, please ensure that the APN settings is correct:
For iOS users:
1. Ensure that the phone carrier setting is StarHub 27.2 or above.
Go to Settings > General > About > Carrier > StarHub: 27.2
2. Settings > Mobile Data > Mobile Data Options > Mobile Data Network > APN: shwap
For Android users:
1. Go to Settings > Mobile Networks > Access Point Names > APN: shwap / Username & Password: <blank>
Let us know if this helps!
Quick check, Cpctruman - have you tried to manually log on to other roaming operators?
If this doesn't work, please reply with your full name, NRIC/FIN number, service number and email for verification by clicking the words bracketed by the arrows here > via Private Message < so we can assist you.