Traditional Culture Encyclopedia - Traditional festivals - How to use mobile 4g plus HD voice call service?
How to use mobile 4g plus HD voice call service?
Send short message "ktVoLTE" to 10086 to activate VoLTE function or download and log in to the mobile phone business hall to handle 4G+ HD voice service.
The conditions for opening HD voice are:
1, a mobile phone supporting VoLTE;
2. A mobile 4G USIM card;
3. Call 10086 to ask if this service is supported in this area.
Mobile phones supporting 4G+ HD voice include iPhone, Samsung, Huawei, ZTE, Coolpad and other brands.
Take the iPhone as an example. Only when the iPhone is upgraded to 9.2. 1 or above, and the carrier version is upgraded to China Mobile 23. 1 or above, can VoLTE HD voice call function be supported.
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