Singapore
+65 ·
4 operators
Singapore has around 9.5 million mobile subscriptions with SIM penetration above 150%, dominated by three major operators: Singtel (market leader), StarHub, and M1, with Simba (formerly TPG) and numerous MVNOs (Circles.Life, giga!, Zero1). Postpaid has a high share, and prepaid tourist SIMs are a notable feature. USSD use is relatively limited compared to many markets — apps and SMS dominate self-service, with USSD mainly used for own-number and balance enquiries.
Mobile Operators · USSD Quick Reference
M1
★★★ Verified
3 codes total
#100#
Check balance and expiry date
#100*6*2*2#
M Send Singapore local credit transfer
#131#
M Send International credit transfer
Simba
★★★ Verified
1 codes total
*1218#
Check account balance (when overseas)
SingTel
★★★ Verified
2 codes total
*100#
Check account balance
*139#
Check SIM card expiry date
Starhub
★★★ Verified
1 codes total
*123#
Check balance (3G only, 4G/5G uses app)