Please try the following methods to solve the problem: 1. Please make sure that the dialed phone number is entered correctly. Note: For the specific method of "calling abroad" or "calling when roaming abroad", please consult the corresponding operator. 2. Please confirm that there is a balance in the SIM/USIM card and call the customer service hotline of the corresponding operator for inquiry. 3. call barring Settings: When the SIM card is inserted into the mobile phone, you can click "> Settings > Card 1 or Card 2" More "> call barring Settings to check the setting status of call barring. Note: If this option is not available, it means that the phone has no call barring function. Tips: If the above methods can't make your mobile phone talk normally, it is recommended that you bring the unavailable Huawei mobile phone and related purchase invoices to Huawei after-sales service center to check whether there is any problem with the signal transmission function of the mobile phone.
This situation is mainly due to the suspicion that the mobile phone card is not good, so don't worry occasionally. Just restart normally. 2. If it appears frequently, go to the business hall and replace the SIM card for free.
How to deal with telephone failure: 1. Check the status of the mobile phone to see if it is down; 2. If there is a signal that can't answer the phone normally, it is recommended to check whether call forwarding or flight mode is set; If there is no signal, you can ask people around you if there is such a situation. If so, the network signal in your location may be abnormal.
It may be that the card contact is not good, it may also be that your mobile phone vibrates to cause poor contact, and the regional signal may also have an impact.
Shut down and restart.