Have a S22U. Yest ran the latest S/W upgrade. And now whenever I want to unlock the phone from blank screen, the top right corner will have a quick block flash on the screen where the icons are. *** those upgrades. I thought that everytime before I download or run the upgrade, I will restart the phone first giving it a fresh start will prevent problems. So it is not the case. When they want to get u, they will get u. *Sigh****