Singtel is the largest operator with more than 4 million subscribers. In contrast, both StarHub and M1 have a little more than 2 million subscribers each.
For most travelers, the hi!Tourist SIM card may be interesting because you will get 100 GB of data for ONLY 12 SGD (8.50 USD/7.80 EUR/6.80 GBP, 13.15 AUD/15 NZD), which is insanely cheap! However, the validity of the tourist SIM card ranges from 7 days up to 15 days.
For those who are not interested in the hi!Tourist SIM card because you want a SIM card that has a longer validity or because you are not a tourist, then the hi!Card is for you.
Other Singaporean operators:
- Singaporean SIM card review and comparison: https://phonetravelwiz.com/singapore-comparison
- Singaporean SIM card video review and comparison:
- StarHub Review: https://phonetravelwiz.com/starhub
- StarHub Video Review: https://www.phonetravelwiz.com/ir34