What is VoLTE？
VoLTE (Voice Over LTE) is the voice calls service transmitted via 4G network, you can enjoy more stable & high-speed voice call! CTM customers can enjoy FREE VoLTE Service by holding a handset that has activated the VoLTE function, to enjoy better call experience!
Advantages of VoLTE
1. Stable connection, better voice quality
2. Fast connection, shorten call waiting time
3. Two-line operation, you can use data to online while making a call
How to use VoLTE？
1. Need a mobile phone that supports VoLTE function
2. Upgrade the phone system to the latest version
3. Activate the phone's VoLTE function
VoLTE iOS Usage Guideline
1. Click " Mobile " in " Settings "
2. Click " Primary "
3. Click " Voice & Data "
4. Activate " VoLTE "
VoLTE Android Usage Guideline
1. Click " SIM cards & mobile networks " in " Settings "
2. Click " CTM "
3. Activate " Use VoLTE"
For more Android models’ setting and activation procedure, please refer to detail information
Notes:
- Please update your mobile system to the latest version, and refer to activation method above.
- When 5G mobiles are in 5G mode and some 4G mobiles have already activated VoLTE by default, there is no need to manually activate VoLTE. For mobiles that have not been set for automatic activation, you can refer to the above settings and activation methods.
- The activation method here is for your reference. According to different models and software version, the actual screen and procedure may be slightly different.
Handsets support VoLTE：
iPhone 15 Pro Max | iPhone SE (2nd Gen) | iPhone X |
iPhone 15 Pro | iPhone 12 Pro Max | iPhone 8 Plus |
iPhone 15 Plus | iPhone 12 Pro | iPhone 8 |
iPhone 15 | iPhone 12 Mini | iPhone 7 Plus |
iPhone 14 Pro Max | iPhone 12 | iPhone 7 |
iPhone 14 Pro | iPhone 11 Pro Max | iPhone 6 |
iPhone 14 Plus | iPhone 11 Pro | iPhone 6s |
iPhone 14 | iPhone 11 | iPhone 6 Plus |
iPhone 13 Pro Max | iPhone Xs Max | iPhone 6s Plus |
iPhone 13 Pro | iPhone Xs | iPhone SE |
iPhone 13 Mini | ||
iPhone 13 | ||
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Samsung Galaxy S24 | Samsung Galaxy A80 | Samsung Galaxy Z Flip 5 |
Samsung Galaxy S24 Ultra | Samsung Galaxy A71 | Samsung Galaxy Z Flip 4 |
Samsung Galaxy S24+ | Samsung Galaxy A70 | Samsung Galaxy Z Flip 3 |
Samsung Galaxy S23 | Samsung Galaxy A60 | Samsung Galaxy Z Flip |
Samsung Galaxy S23 FE | Samsung Galaxy A55 | Samsung Galaxy Z Fold 5 |
Samsung Galaxy S23 Ultra | Samsung Galaxy A54 | Samsung Galaxy Z Fold 4 |
Samsung Galaxy S23+ | Samsung Galaxy A52 | Samsung Galaxy Z Fold 3 |
Samsung Galaxy S22 | Samsung Galaxy A51 | Samsung Galaxy Z Fold 2 |
Samsung Galaxy S22+ | Samsung Galaxy A50s | Samsung Galaxy Fold |
Samsung Galaxy S22 Ultra | Samsung Galaxy A42 | Samsung Galaxy Tab A7 10.4 |
Samsung Galaxy S21 Ultra | Samsung Galaxy A40s | Samsung Galaxy Tab S8 Ultra |
Samsung Galaxy S21+ | Samsung Galaxy A35 | Samsung Galaxy Tab S8+ |
Samsung Galaxy S21 | Samsung Galaxy A34 | Samsung Galaxy Tab S8 |
Samsung Galaxy S20 Ultra | Samsung Galaxy A32 | Samsung Galaxy Tab S7+ |
Samsung Galaxy S20+ | Samsung Galaxy A31 | Samsung Galaxy Tab S7 FE |
Samsung Galaxy S20 FE | Samsung Galaxy A25 | Samsung Galaxy Tab S7 LTE |
Samsung Galaxy S20 | Samsung Galaxy A23 | Samsung Galaxy NOTE 20 Ultra |
Samsung Galaxy S10e | Samsung Galaxy A22 | Samsung Galaxy NOTE 20 |
Samsung Galaxy S10 | Samsung Galaxy A21s | Samsung Galaxy NOTE 10 Lite |
Samsung Galaxy S10+ | Samsung Galaxy A20s | Samsung Galaxy NOTE 10 |
Samsung Galaxy S9 | Samsung Galaxy A20 | Samsung Galaxy NOTE 10+ |
Samsung Galaxy S9+ | Samsung Galaxy A15 | Samsung Galaxy NOTE 9 |
Samsung Galaxy S8 | Samsung Galaxy A14 | Samsung Galaxy NOTE 3 LTE |
Samsung Galaxy S8+ | Samsung Galaxy A13 | Samsung Galaxy NOTE 4 |
Samsung Galaxy S7 | Samsung Galaxy A12 | Samsung Galaxy NOTE 5 |
Samsung Galaxy S7 edge | Samsung Galaxy A9 | Samsung Galaxy NOTE 8 |
Samsung Galaxy S6 | Samsung Galaxy A8s | Samsung Galaxy C9 Pro |
Samsung Galaxy S6 edge | Samsung Galaxy A8+ | Samsung Galaxy C7 Pro |
Samsung Galaxy S6 edge+ | Samsung Galaxy A7 | Samsung Galaxy C7 |
Samsung Galaxy S5 | Samsung Galaxy M34 | |
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Huawei Pura 70 Ultra | Huawei P60 Pro | Huawei Nova 12S |
Huawei Pura 70 Pro | Huawei P50 Pro | Huawei Nova 12l |
Huawei Pura 70 | Huawei P50 Pocket | Huawei Nova 12 SE |
Huawei Mate X5 | Huawei P40 Pro+ | Huawei Nova 11i |
Huawei Mate X3 | Huawei P40 Pro | Huawei Nova 10 Pro |
Huawei Mate XS 2 | Huawei P40 | Huawei Nova 10 SE |
Huawei Mate 60 Pro | Huawei P30 Pro | Huawei Nova 10 |
Huawei Mate 50 Pro | Huawei P30 | Huawei Nova 9 |
Huawei Mate 50 | Huawei P30 Lite | Huawei Nova 7 |
Huawei Mate 40 Pro | Huawei P20 Pro | Huawei Nova 7 SE |
Huawei Mate 30 Pro | Huawei P20 | Huawei Nova 7i |
Huawei Mate 30 | Huawei P20 Lite | Huawei Nova 5T |
Huawei Mate 20 Pro | Huawei Y6P | Huawei Nova 4 |
Huawei Mate 20 | Huawei Y9s | Huawei Nova 3i |
Huawei Mate 20X | Huawei Y9 Prime (2019) | Huawei Nova 3 |
Huawei Mate 10 | Huawei Y7 Prime (2018) | Huawei Nova 2i |
Huawei Mate 10 Pro | Huawei Y9 2019 | |
Huawei Mate 9 | Huawei Y7 Pro 2019 | |
Huawei Mate 9 Pro | ||
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HONOR 90 | HONOR MAGIC V2 | HONOR X8A |
HONOR 90 LITE | HONOR MAGIC V2 PD | HONOR X7A |
HONOR 70 | HONOR MAGIC VS | HONOR X7B |
HONOR MAGIC 6 | HONOR X9A | HONOR X6A |
HONOR MAGIC 6 PRO | HONOR X9B | HONOR X6 |
HONOR MAGIC 5 PRO | HONOR X8 LTE | HONOR View 20 |
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Xiaomi 14 ULTRA | Xiaomi 12T | Xiaomi 11i |
Xiaomi 14 | Xiaomi 12T PRO | Xiaomi 11 |
Xiaomi 13 | Xiaomi 12 | Xiaomi 11 ULTRA |
Xiaomi 13 LITE | Xiaomi 12X | Xiaomi 10T PRO |
Xiaomi 13 PRO | Xiaomi 12 PRO | Xiaomi 10T |
Xiaomi 13 ULTRA | Xiaomi 11T PRO | Xiaomi 10T LITE |
Xiaomi 13T | Xiaomi 11T | |
Xiaomi 13T PRO | Xiaomi 11 LITE | |
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REDMI NOTE 13 PRO+ | REDMI NOTE 11 PRO+ | REDMI 9A |
REDMI NOTE 13 PRO | REDMI NOTE 11 PRO | REDMI 7 |
REDMI NOTE 13 | REDMI NOTE 10 | REDMI 7A |
REDMI NOTE 12 PRO+ | REDMI NOTE 9T | |
REDMI NOTE 12 PRO | REDMI NOTE 7 | |
REDMI NOTE 12 | REDMI NOTE 6A | |
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VIVO X100S | VIVO X27 | VIVO S18 |
VIVO X100S PRO | VIVO X23 | VIVO Y100 |
VIVO X100 | VIVO X FLIP | VIVO Y97 |
VIVO X100 PRO | VIVO X FOLD 3 | VIVO Y93 |
VIVO X70 | VIVO X FOLD2 | VIVO Y78+ |
VIVO X70 Pro | ||
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Sony Xperia 10 IV | Sony Xperia 1 V | Sony Xperia XZ2 |
Sony Xperia 10 V | Sony Xperia 1 III | Sony Xperia XZ2 Compact |
Sony Xperia 10 VI | Sony Xperia 1 II | Sony Xperia X Compact |
Sony Xperia 10 III | Sony Xperia 1 | Sony Xperia X Performance |
Sony Xperia 10 II | Sony Xperia Pro I | Sony Xperia Z3 |
Sony Xperia 5 IV | Sony Xperia X | Sony Xperia Z3+ |
Sony Xperia 5 V | Sony Xperia XZ | Sony Xperia Z5 |
Sony Xperia 5 III | Sony Xperia XZs | Sony Xperia Z5 Compact |
Sony Xperia 5 II | Sony Xperia XZ Premium | Sony Xperia Z5 Premium |
Sony Xperia 5 | Sony Xperia XZ1 | Sony Xperia 10 |
Sony Xperia 1 IV | Sony Xperia XZ1 Compact | Sony Xperia 10 Plus |
Sony Xperia 1 VI | Sony Xperia XZ3 | |
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ASUS ROG Phone 8 Pro | ASUS ROG Phone 6 DIABLO | ASUS ZenFone 11 ULTRA |
ASUS ROG Phone 8 | ASUS ROG Phone 6 | ASUS ZenFone 10 |
ASUS ROG Phone 7 ULTIMATE | ASUS ROG Phone 5s Pro | ASUS ZenFone 9 |
ASUS ROG Phone 7 | ASUS ROG Phone 5s | ASUS ZenFone 8 Flip |
ASUS ROG Phone 6D ULTIMATE | ASUS ROG Phone 5 | ASUS ZenFone 8 |
ASUS ROG Phone 6D BATMAN | ASUS ROG Phone III | ASUS ZenFone 7 |
ASUS ROG Phone 6D | ASUS ROG Phone II | |
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NOTHING PHONE 2a | NOTHING PHONE 2 | NOTHING PHONE 1 |
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NOKIA 8210 4G | NOKIA 9 | NOKIA 6.1 |
NOKIA G50 | NOKIA 8 | NOKIA 7 Plus |
NOKIA G60 | NOKIA 8.3 | NOKIA 8 Sirocco |
NOKIA X20 | NOKIA 7.2 | NOKIA 2.3 |
NOKIA X30 | NOKIA 7.1 | |
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LG G7+ | LG G6+ | LG V30+ |
LG G7 Fit | LG G6 | LG Q6+ |
LG V40 | LG K11 | |
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HTC U12+ | HTC U11+ | HTC Desire 12+ |
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XIAOTIANCAI Z7 SMARTWATCH | ||
