3G Service Page

 

To keep up with global communication trends and accelerate the development of "Digital Macau", CTM 3G network will phase out starting from June 2025.

At that time, your device must:

1.     Supports 4G / 5G network

2.    Activate VoLTE voice function in device’s Settings

 

(You may also dial #183# to check if your device supports the above functions)

To avoid affecting your daily voice communication services. If you have any questions or need assistance, please visit any CTM shop or dial CTM No. 1 Hotline1000 for enquiries.

 

 

 

FAQ

1.     What’s the reason for the 3G network phase out?

To keep up with global communication trends, various regions has gradually phased out their 3G network to have better deployment for the new telecom technologies and service provision. In order to accelerate the development of  smart city, Macau's 3G network will be phased out starting from early June 2025 and relevant spectrum resources will be returned for government’s further planning.

 

2.     How should current 3G customers to get ready for the phase out?

In order to secure customers’ seamless service experience, SMS notification will be delivered to batch of customers who still under 3G network to remind a timely upgrade of service plans and devices. Customers can also dial #138# to check if your device supports 4G / 5G network and VoLTE voice function. For any queries or assistance, please visit any CTM shop or dial CTM No. 1 Hotline1000.

 

3.     How to inquire about questions & details on the phase out of 3G network?

CTM is committed to support current users with care and best assistance. For any queries or assistance, please visit any CTM shop or dial CTM No. 1 Hotline1000.

 

4.    How to check if my device would be affected after 3G network phase out?

By dial #183# from the device you are using, you can check if it is 4G / 5G and VoLTE voice function supported. For any assistance needed, please visit any CTM shop or dial CTM No.1 Hotline: 1000. CTM also introduces device upgrade special offer, please refer to above latest offer.

 

5.    What settings need to be made on the device currently in use? Are there any related instructions available for customer reference?

You can dial #183# to check if the device is 4G / 5G and VoLTE voice function supported. The device should be connected to 4G / 5G network and activate VoLTE voice function in the settings, for settings guidance please refer to https://s.ctm.net/1suei . For any assistance needed, please visit any CTM shop or dial CTM No.1 Hotline: 1000

 

6.     How to check if I don't know the brand and model of my device?

You can dial #183# to check if the device you are using is supported, or you can visit any CTM shop to check, or dial CTM No.1 Hotline: 1000.

CTM also introduces device upgrade special offer, please refer to above latest offer.

 

 

7.     If my device cannot make phone calls, how can I check if my device is supported? (e.g. iPad)

Please visit any CTM shop or dial CTM No. 1 Hotline: 1000 for enquiries.

 

8.     After 3G network phase out, is it necessary to replace my device in use??

If your device is verified as able to support 4G / 5G network and VoLTE voice function, then there is no need to change the device. Customer can dial #183# to self check if the device is supported.

 

9.     My 3G device is used only for making phone calls, why do I need to replace it with a 4G / 5G device? Can I still use the service if not replace it?

Voice call experience would be enhanced by using VoLTE voice functions through 4G / 5G network, after 3G network phase out, it is necessary to use device supporting 4G / 5G and VoLTE voice function in order to be able to continue using voice calls, mobile data, send and receive SMS.

CTM also introduces device upgrade special offer, please refer to above latest offer.

 

 

10.   I am a 4G / 5G device customer, why do I need to be notified for the 3G network phase out?

There are still some 4G / 5G devices that do not support VoLTE voice function. In order to enjoy seamless communication experience after 3G network phase out, customers are recommended to dial #183# to check if your device supports VoLTE function. CTM also introduces device upgrade special offer, please refer to above latest offer.

 

 

11.   I have replaced my device with one that supports 4G / 5G and VoLTE, why dialing #183# still shows that the device is not supported?

The dial of #183# covers mainstream mobile devices if capable to support 4G / 5G and VoLTE functionality, there are minor portion of devices may not be capable to cope with the self-check. It is recommended to visit the store where you purchased the device for further enquiry.

 

12.   Will my data usage be consumed for voice calls over 4G (VoLTE)?

Voice calls over 4G (VoLTE) will not consume data usage.

 

13.   How can I make a voice call over 4G (VoLTE) after the 3G network phase out?

As long as you use a device that supports 4G / 5G network and VoLTE voice function, and activated VoLTE voice function successfully, you can make / receive calls as usual, with no difference.

 

14.   Does the currently used SIM card need to be replaced? Can customers check on their own?

SMS notification will be delivered to the batch of CTM customers who need to replace their SIM cards. For any assistance needed, please visit any CTM shop or dial CTM No.1 Hotline: 1000.

 

Note:

-       Customers are bound by the respective service agreement.