Help on fixing “unfortunately the process com android systemui has stopped” on galaxy S3 NOTE
I have the same problem as you have. It has appeared yesterday. After I have tried all the suggestions found on the internet and none got results, I came to the conclusion that this is a new issue. I reset my device to factory settings more than a few times. With the fresh installed os the problem disappeared. After syncing all the apps from google account got me to the same error. I have followed which application fresh installed got me to the same problem. I saw a relation between google application https://play.google.com/store/apps/details?id=com.google.android.googlequicksearchbox and this error. I have uninstalled it and yes that was the reason. But this is not really the solution as I don't have access to a lot of stuff without google app.