Phone stuck on IU error while charging and screenshot?

[Android Central Question]

I am having problem like if my phone is on charging and the call is coming I can't accept the call it's says IU error. And also my note 4 cannot take screenshot it give IU error. I tried to refresh but same error. Please help.

 

[B. Diddy]

Welcome to Android Central! Do you mean a System UI error? What exactly does it say?

Does this persist after a reboot? How about after a cache partition wipe? https://support.t-mobile.com/docs/DOC-28932. Or in Safe Mode? https://support.t-mobile.com/docs/DOC-28897