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Activate VoLTE service now!


What is VoLTE ?

1O1O is proud to present you VoLTE, which brings voice call and video call to a brand new generation! VoLTE (Voice Over LTE) means connection of voice and video call through 4G LTE network. As a valuable 1O1O customer, you can now enjoy a FREE upgrade to experience voice call with speedy connection and video call with high quality!

In 2017, 1O1O has joined forces with Macau mobile service provider CTM to launch the world’s first end-to-end VoLTE IDD service, so both sets of customers can enjoy high-quality voice and video IDD calling, plus near-instant connection.



Benefit of using VoLTE

Make substantially faster voice-call connections. Effecting a traditional 3G call connection takes an average of 7 seconds, but can be done in just 1 second when using VoLTE.

VoLTE significantly enhances voice quality, especially with our expansive network coverage.

You can use data for other functions while on a call – eg browsing or downloading an app. This capability enables you to multitask.

VoLTE has the ability to switch seamlessly between LTE and Wi-Fi calling, without your call dropping out.

Ensures high-definition video calling (applicable only to some Android handsets). A VoLTE connection provides clear picture quality without grids, because resolution is up to 640 x 480 pixels. As a comparison, resolution for 3G network video calls is just 176 x 144 pixels.

Switch between a voice and video call instantly with just one click (applicable only to certain Android handsets), whereas switching from 3G to 4G involves a delay. A spin-off benefit is longer battery life.



Must have items for using VoLTE

Use a VoLTE enabled handset
Have the handset software
upgraded to latest version
(Applicable to Android handsets)
Activate the VoLTE function on the handset
(Below are activation examples for different mobile phone series for reference. If the iPhone is iOS14 or later / Samsung phone is Android 12 or later / SONY phone is Android 13 or later, VoLTE is enabled by default, no further activation is required)
  - iPhone (iOS13)  
  - Huawei(Android 9)  
  - Huawei(Android 10)  
  - LG (Android 9)  
  - LG (Android 10)  
  - OPPO (Android 12)  
  - Samsung (Android 9 & 10)  
  - Samsung (Android 11)  
  - Sony (Android 9)  
  - Sony (Android 10 & 11)  
  - Sony (Android 12)  
  - Xiaomi (Android 10)  
  - Xiaomi (Android 11 & 12)  

In addition, Samsung user can also upgrade the handset firmware with the following ways:

Bring your handset to
Samsung customer
service center
Download firmware via
Samsung official site
Bring your handset to
1O1O Center

Call the 1O1O Product Hotline on 2988 1010
or visit a 1O1O Center for details.

  1. VoLTE service is only available under 4G LTE network coverage for intra-network calls or inter-network call between CTM Macau, with designated rate plans and handsets, and cannot be used in conjunction with certain types of service. Please call 2888 1010 for details.
  2. Video call is a chargeable service, irrespective of whether 3G or VoLTE has been activated. The standard charge of local video call: intra network – $1.5/min; other local operator – $2.5/min. Usage will be rounded up to the nearest minute. Customer in Hong Kong makes voice or video calls to CTM Macau numbers or makes IDD voice or video calls in Macau are subject to extra IDD charges.
  3. VoLTE Video call is only available when both users are using VoLTE service.