Thailand
+66 ·
5 operators
Thailand's mobile market is dominated by three operators: AIS (Advanced Info Service, market leader), True Move H (True Corporation), and NT Mobile (formed from the dtac/CAT/TOT merger). With ~120 million subscriptions and high SIM penetration, prepaid tourist SIMs are a notable feature. USSD is widely used for balance checks, data pack subscriptions, and roaming settings by both tourists and residents.
Mobile Operators · USSD Quick Reference
AIS
★★★ Verified
5 codes total
*111*6#
Check data balance
*120*<voucher>#
Top-up via voucher PIN
*121#
Main USSD Menu Browser (free)
*113*30*9#
Extend SIM validity 30 days
Showing 4 of 5 codes
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DTAC
★★★ Verified
5 codes total
*101#
Check balance (Thai)
*102*9#
Check if number is in DTAC network
*101*4*9#
Check data package balance
*101*9#
Check balance (English)
Showing 4 of 5 codes
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my-by-NT
★★★ Verified
1 codes total
*1993#
Check VAS usage (shares NT network)
N
NT
★★★ Verified
1 codes total
*1993#
Check value-added service usage
True-Move
★★★ Verified
4 codes total
#123#
Check balance and SIM expiry
*934*30#
Quick Add validity 30 days
*934*180#
Quick Add validity 180 days
*9305
Convert tourist SIM to local plan