IncallU system app or another device spying. Reset n decide
If its a system app in my experience it usually cant not be deleted. I think its someone else spying on calls texts etc. My phone acts up n does stupid things its never done . I reset my phone and its free of any suspicious activity also incallu isnt shown anymore, reset ur phone n look at the apps that are there . Youll realize the difference. Also download the app to detect spying, hacked or a bf snooping.