There is a short message on the mobile phone indicating that the answer is interrupted.

1, maybe the signal is bad. You can check the signal in the status bar of your mobile phone. If the signal is not good, please try a place with good signal strength. Or the phone is set with blacklist (call rejection) function. When opening the phone housekeeper, you need to make sure that the incoming number is not in the harassment and interception Chinese phone label.

2. If other calls can't come in, it's suggested to troubleshoot in the following ways: (1) Call forwarding is set on the mobile phone, so you can cancel call forwarding and try again. For example, Unicom users can cancel all call forwarding by entering ##002# in the dialing interface of their mobile phones and then dialing. After success, the screen will prompt that the operation is successful.

3. Huawei's mobile phone has been calling. Please try the following methods: Please take out the SIM card and insert it again. Poor contact with the SIM card may cause the phone to be unable to call in. Please check whether the signal in the status bar of the mobile phone is good. If the signal is poor, please try it in an environment with good signal strength.

4. If you use a Huawei mobile phone, you can do it in the following ways: you can't make a phone call in a specific scene (1), and you can't fix someone's number to remind the user that you are busy. Maybe the other party has blacklisted your number.