How can I get past the UI system has stopped and get back to phone's normal function?

[AC Question]

I removed Sim card and reinstalled it an now I can't get back to phones home screen. It won't let me factory reset anything either.

 

[Laura Knotek]

Welcome to AndroidCentral.

What device do you have?

 

[xocomaox]

Try holding down power and volume down for a hard reset.

 

[Toni Lovell]

Samsug gax 6

 

[Toni Lovell]

Samsung gax6

 

[Toni Lovell]

The same thing keeps happening the message comes up

 

[Toni Lovell]

I done as you advised but same message keeps coming up