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How does China Telecom open the call service function of Redmi k50pro?

The method is as follows:

1. Insert the SIM card of China Telecom into Redmi k50pro mobile phone, and turn it on to confirm the opening of communication service.

2. Open the settings application of the mobile phone, select the SIM card and mobile network options, and ensure that the "Mobile Data" and "Voice and SMS" options are enabled.

3. Restart the mobile phone, make a phone call or send a text message to ensure that the call service function has been turned on normally.