Samsung note4 took less than a year. Recently, various cards have been installed in the mobile phone, and then it is automatically restarted. The sd card and sim card have been removed, and they are still the same. If the phone is stuck, the response is slow, and sometimes it is slow. , it was suggested that:

1. Restart the machine. If the battery of the mobile phone is built-in, please press and hold the power button and volume button at the same time for more than 7 seconds to restart the device.

2. Too many mobile phone background programs may cause your machine to run slowly and get stuck. It is recommended to close some background programs.

3. Some machines support intelligent manager or memory manager, so it is recommended to manually close the automatically running application through this function.

4. If the above situation only occurs in individual applications, it is recommended that you update the application or uninstall and delete before trying to reinstall other versions;

5. Check whether the memory of the mobile phone is insufficient, and suggest uninstalling and deleting some unused programs or files;

6. Check whether the mobile phone has a system push notification, and if so, update the mobile phone to the latest system version.

7. If it is invalid, back up the data (contacts, information, photos, etc. ) and try to restore the factory settings.

If the problem still exists, please take the purchase invoice, maintenance card and machine to Samsung Service Center for inspection.