[Q] Note 3 reboots when (un)installing an app topic

Hi

I am facing an issue since some time : each time I want to install and uninstall a software, my phone restarts after some time ; some times the app installed correctly, some others, it fails.
When I try to uninstall an app, it is a never ending process and then it restarts

Could you help me please ?

i do not understand what is happening

Thanks