I have had the control center trays crashing and requiring a phone restart to work multiple times a day on iOS 8. I have not had this frustrating problem on iOS 7. Well, it turns out I was over-using the new, fun, magnifying glass accessibility feature. Upon reading this article and testing, I found that using the mag glass just a few times and switching apps causes the control centers to crash. The solution I found is simple: If you like magnifying like I do for full-screen photos, battery-meter, and movies but need the control center trays, just use full screen zoom and avoid the magnifying glass. Also: I found a fun tip while testing this app: On iOS 8. if you three-finger-tap three times, it will pull up the magnification options. Have fun with magnification: a lesser-known, but excellently programmed feature and say goodbye to borders !