The numbers that you use to enter your pass code. There used to be a ring around each number. There is no longer. Also you could see what number you entered or there would be an * entered, you can no longer see what number you entered. Also before it would show a text message or call missed in the lock screen and I thought that the background was more transparent, mine is pretty much all black. Just wondering if the update did this or if my phone is acting up. I also had yellow tint issues going on yesterday that have seemed to go away today.