How to fix Unfortunately System UI has stopped
NeedhelpfixingsystemproblemsafterdownloadingLollipop5.0upgradeforNote3today·5·EnableOn-screennavigationinCM12(Lollipop) ...,Iamexperiencingexactlythesameissue.IcalledSamsungtechnicalsupportcenter,theladyadvisedmetododatabackupandfactoryreset.,Res...。參考影片的文章的如下: