My Huawei mobile phone can't make a call, and I can't answer the phone after sending the message. What happened?

You said that your Huawei mobile phone can't make calls, send messages or answer phones. What happened? Do you have a phone card installed on your mobile phone? If a phone card is installed, see if there is any arrears. If there is a phone bill, and then the network can be used normally, it should be that there is something wrong with the mobile phone. It should be the phone hardware. Send it to the mobile phone shop and ask him to check it for you and see what the reason is.