If the call on your phone is automatically disconnected, please refer to the following troubleshooting steps:
1. Make sure you are in an area with good signal. If the signal is weak or unstable, it will cause dropped calls;
2. Reinsert the SIM card to ensure it is properly installed. If possible, try inserting the SIM card into another phone to see if the issue persists;
3. Check if any call restrictions or application settings are enabled that can affect calls;
4. Uninstall optimization applications and then back up your data before performing a factory reset without restoring the backup
5. Update the system to the latest version and test again;
6. If the problem still exists, contact your mobile service provider for assistance. They can check for network or account issues.
If the problem continues to occur frequently, it is recommended to visit the after-sales service center for further inspection.