What's the matter with a blank screen and only text messages and phone calls?

When only SMS and phone functions are available on the mobile phone, and other applications or functions are blank, there may be the following reasons:

1. Software failure: Some applications or systems may fail or conflict, resulting in other functions of the mobile phone not being displayed normally. Try to restart the phone and see if it can solve the problem. If the problem still exists, consider uninstalling the recently installed application or updating the system.

2. Insufficient storage space: If the storage space of the mobile phone is insufficient, some applications may not load normally. Clear the phone memory and delete unnecessary data, applications or files to free up space.

3. Virus infection: The mobile phone may be infected by virus or malware, which may cause some applications or system functions to fail to operate normally. Use authoritative security software to conduct a comprehensive scan of mobile phones and delete viruses or malware.

4. Operating system problems: errors or damage to the operating system may cause problems. Try to update the operating system or restore the factory settings to solve potential system problems.

If the above solutions fail to solve the problem, it is recommended to consult the customer service support or technical support of the mobile phone manufacturer for more specific help and guidance.