VoLTE

What is VoLTE?

csl 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 csl customer, you can now enjoy a FREE upgrade to experience voice call with speedy connection and video call with high quality!

In 2017, csl 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

(1)  Facilitates faster voice-call connections. What used to take around 7 seconds on a 3G network is now as fast as 1 second, if both parties are using VoLTE.  Even so it just takes around 4 seconds if using 3G network.

(2) Ensures high-definition quality video calling  (applicable only to Android handsets).

Traditional video call connected under 3G network. The resolution is just 176 x144 pixels. The visual is blur.		Video call connected under VoLTE, with resolution reaches up to 640 x 480 pixels. Obviously the visual is very clear with high quality.

(3)  Provides instant switching between voice and video calls  (applicable only to Android handsets) at the click of a button.

Switch between voice and video call by pressing Video call .

Must have items for using VoLTE:

• handset supporting VoLTE
• Have the handset software upgraded to the latest version (Applicable to Android phones) .
• Activate the VoLTE function of the handset:
    - iPhone
    - Samsung
    - LG
    - Sony

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

a. Bring your handset to Samsung customer service center
b. Download firmware via Samsung official site
c. Bring your handset to csl Customer Service Center

Handset supporting VoLTE:

    - iPhone X
    - iPhone 8 Plus
    - iPhone 8
    - iPhone 7 Plus
    - iPhone 7
    - iPhone 6
    - iPhone 6s
    - iPhone 6 Plus
    - iPhone 6s Plus
    - iPhone SE
    - ASUS ZenFone 5
    - ASUS ZenFone 3
    - ASUS ZenFone AR
    - BlackBerry Priv
    - BlackBerry DTEK 60
    - HTC One M9
    - HTC U12+
    - HTC U11+
    - HTC U11
    - HTC U Ultra
    - HTC U Play
    - HTC 10
    - HTC Desire 12+
    - HTC Desire 10 Pro
    - Huawei Mate 10
    - Huawei Mate 10 Pro
    - Huawei Mate 9
    - Huawei Mate 9 Pro
    - Huawei Mate 20 Pro
    - Huawei Mate 20
    - Huawei P20 Pro
    - Huawei P20
    - Huawei P20 Lite
    - Huawei P10 Plus
    - Huawei P10
    - Huawei P9 Plus
    - Huawei P9
    - Huawei Y7 Prime (2018)
    - Lenovo K8
    - Lenovo K8 Note
    - LG AKA
    - LG G Flex 2
    - LG G3
    - LG G3 Beat
    - LG G4
    - LG G4c
    - LG Stylus 2 Plus
    - LG G5
    - LG G6
    - LG G6+
    - LG G7 ThinQ
    - LG G7+ ThinQ
    - LG Q6+
    - LG K10
    - LG K10(2017)
    - LG V10
    - LG V20
    - LG V30+
    - Nokia 6
    - Nokia 8
    - NEW Nokia 6
    - Nokia 7 Plus
    - Nokia 8 Sirocco
    - Samsung Galaxy Note 9
    - Samsung Galaxy Note 3 LTE
    - Samsung Galaxy Note 4
    - Samsung Galaxy Note 5
    - Samsung Galaxy Note 8
    - Samsung Galaxy S9
    - Samsung Galaxy S9+
    - Samsung Galaxy S8
    - Samsung Galaxy S8+
    - Samsung Galaxy S7
    - Samsung Galaxy S7 edge
    - Samsung Galaxy S6
    - Samsung Galaxy S6 edge
    - Samsung Galaxy S6 edge+
    - Samsung Galaxy S5
    - Samsung Galaxy A8+
    - Samsung Galaxy C7
    - Samsung Galaxy C5 Pro
    - Samsung Galaxy C7 Pro
    - Samsung Galaxy C9 Pro
    - Samsung Galaxy Folder 2
    - Sony Xperia X
    - Sony Xperia XZ
    - Sony Xperia XZs
    - Sony Xperia XZ Premium
    - Sony Xperia XZ1
    - Sony Xperia XZ1 Compact
    - Sony Xperia XZ3
    - Sony Xperia XZ2
    - Sony Xperia XZ2 Compact
    - Sony Xperia XA1 Ultra
    - Sony Xperia XA2
    - Sony Xperia XA2 Ultra
    - Sony Xperia X Compact
    - Sony Xperia X Performance
    - Sony Xperia Z3
    - Sony Xperia Z3+
    - Sony Xperia Z5
    - Sony Xperia Z5 Compact
    - Sony Xperia Z5 Premium
    - Sony Xperia Z4 Tablet
    - Vivo Y81
    - Vivo V11
    - Vivo X21
    - Vivo X20
    - Vivo V7
    - Xiaomi Mi 8 Pro
    - Xiaomi Mi 8 Lite
    - Xiaomi Mi MIX 2
    - Xiaomi Mi MIX 2S
    - ASUS ROG Phone
 

Remarks

• 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 25123123 for details. 
• 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.
• VoLTE Video call is only available when both users are using VoLTE service.