In order to further enhance telecommunication services quality, CTM will conduct the following upgrade projects in April 2023:



Project Title

Affected service


From 0:00 to 06:00 on 1st April



Mobile Network System upgrade and maintenance


During the period, some CTM mobile customers may experience intermittent interruption when using SMS, Voice call, Video call, USSD and Call forwarding service, whereas other services will remain normal.

For enquiries, please contact CTM No 1 Hotline: 1000.

Thank you for your kind attention. We apologize for any inconvenience this may cause.