Sorry for the inconvenience caused to your use!
If your phone does not display the number when you make a call, it is recommended that you try the following actions after restarting your phone:
1. Call the operator's customer service number (mobile 10086, Unicom 100 10) to check whether the caller ID service is abnormal.
2. Please try to talk to different contacts more frequently. If individual contacts talk, it is not excluded that the other party's mobile phone has installed some third-party calling software to hide the number. It is recommended to try to observe;
3. Replace another sim card, or put the sim card on another mobile phone and try to use it.
4. It is recommended that you confirm whether you have installed any third-party software related to calls, contacts or blacklists recently. If the conflict is abnormal, you can try to uninstall the relevant software, or restore the factory settings (desktop-settings-backup reset-restore factory settings) after backing up the important information of the lower fuselage to see if it can be improved.
If the problem still cannot be effectively solved, we suggest that you hurry to the nearby Lenovo authorized repair station for specific inspection and treatment.
You can visit /ServiceStation.aspx to see the nearest site. The business hours of maintenance stations are generally from 9: 00- 18: 00 from Monday to Sunday, except holidays, and local stations will adjust slightly according to their own operations. I suggest you call for detailed consultation before you go. Please refer to it.
You are welcome to contact us at any time or visit Lenovo Lewen Bar () for consultation and understanding.