why does removing an app make my phone misbehave

[AC Question]

when I start removing an app the phone tells me "my phone will misbehave if I remove the app"

 

[belodion]

And so it may, depending on the app. Do you have any app in mind?

 

[Tim1954]

You be careful killing apps, be sure to know what you're deleting lest you brick your phone!

 

[B. Diddy]

Welcome to Android Central! Is this a rooted phone? If it's unrooted, then you really can't uninstall any preinstalled apps that are crucial to the system.