Nokia 5230, why do all the messages in the SMS inbox show numbers recently, instead of names in the past? What should I do?

I did the same thing yesterday, but the inbox doesn't display the name, and the scene mode will automatically become silent. Changing the address book settings and uninstalling the software can't solve it. Finally, I can only check the machine. This happened again after installing some software today. Here is a once and for all solution. After the mobile phone is normal, enter file management, backup, and check backup now. When your mobile phone has similar problems, you can usually solve the problem by backing up and restoring the settings there. My personal test will not affect the use of installed software. Please adopt it when the problem is solved!