In order to further enhance telecommunication services quality, CTM will conduct the following upgrade projects in April 2021:






Project Title


Affected service


0:00 am to 06:00 am,

18th April, 2021




Mobile Network System upgrade and maintenance




During the period, some CTM mobile customers may experience intermittent interruption when using VoLTE and mobile data service, whereas other services will remain normal.


0:00 am to 06:00 am,

24th April, 2021


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

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