According to your description, I suggest you try the following methods:

1. Download the installation attempt again.

2. If other third-party software can be used normally, then only this software cannot have compatibility problems with the mobile phone system.

3. The software can't be installed normally due to the lack of memory in the mobile phone. It is recommended that you move the multimedia files stored in your mobile phone to an external SD card to expand the storage space of your mobile phone, and then try to reinstall it.

4. Unknown source is not open: Set-Security-Unknown source check box, and then try to reinstall.

5. Update the mobile phone system version and then try to install it.

6. Back up mobile phone data (phone book, SMS, multimedia files, etc.). ), check the unknown source again after restoring the factory settings, and then try to reinstall.

7. If the problem still exists, please send the mobile phone to the nearest Samsung service center for testing and further processing. Please visit the address and contact information of the service center:

. Samsung。 com/support/service locations。 ASP

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