How do i restart a system app?

[AC Question]

How do I restart a system app? There isnt an icon for android system processer.

 

[smvim]

Try restarting your mobile device, that will reset any system apps that are hung up or have crashed.

 

[B. Diddy]

Welcome to Android Central! Which phone? Are you getting an error message that says "Unfortunately, the process com.system.androidui has stopped," or something like that? If a reboot doesn't help, then also try Safe Mode.