Incoming calls do not display the address book name.

If the incoming call does not display the contact name in the address book, there may be the following reasons and solutions:

1.** There are no contacts stored in the address book: * * First, please make sure that the calling number is in your phone address book. If the contact is not stored in the address book, the system will not be able to recognize and display its name. The solution is to add contacts to the address book.

2.** Incomplete contact information: * * Incomplete contact information may lead to identification problems. Make sure your contact contains the correct phone number and name.

3.** Contact synchronization problem: * * Sometimes, there may be problems in contact synchronization, resulting in incorrect display of contact information. Try to resynchronize your contacts, which can usually be found in the Account or Sync options in the phone settings.

4.** Application or system problems: * * Sometimes, there may be a problem with the operating system or telephone application of the mobile phone, resulting in the contact name not being displayed correctly. Try restarting the phone, or updating the phone application and operating system to the latest version.

5.** Number mismatch: * * Please make sure that the calling number exactly matches the number in the address book, including area code and international area code. Sometimes, slightly different number formats can also cause problems.

6.** Privacy Settings: * * Check the privacy settings of the mobile phone to ensure that the phone application can access the address book. Without the necessary permissions, the contact name may not be displayed.

If none of the above methods can solve the problem, you may need to consider contacting the customer support of the mobile phone manufacturer or consulting the user manual of the mobile phone for a more specific solution to the caller ID problem.