The refresh icon (i assume, the circle with arrows going in a circle) has begun showing on my tool bar on the top of the phone most all of the time. It does go away when I shut the phone off,but returns shortly. The phone also has started buzzing like the notification sound all the time, seems to crash, stall, etc, a lot! I've tried several things, such as disabling the automatic upgrading of apps, etc. but nothing really seems to change. Help?!