M1 Service Centre in Singapura
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 …