M1 Customer service
Calling from Singapore
1627
Calling from Overseas
(65) 9680 1627
(IDD Charge Apply)
Operating Hours
24 hours
M Card
1800-843 8288
Operating Hours
9am to 9pm Daily
M1 Shop Customer service
Calling from Singapore
1623 (M1Shop Hotline)
Calling from Overseas
(IDD Charge Apply)
(65) 9680 1623
Operating Hours
9 am to 9 pm Daily
M1 Service Centre in Singapura
www.m1.com.sg/Support/contact-us