Notifications on iPhone 6 are not showing on the lock screen?

Ever since I got my iphone (6), (I had an iPod 5 before) The notifications for some apps aren't showing even though when I go to settings, it says that they're all on.

This happened to me last week

  • Why is IPhone screen not showing? So when I receive a call my Iphone (6) rings & vibrates but the screen of someone calling doesn't show up for another 3-5 seconds. So I'll be on an app and all of a sudden I get a call but I can't answer it right away because the screen takes a few seconds to show up. What could this be? Do I maybe have a virus or it something else?
  • Snapchat notifications not showing up on lockscreen? My snapchat used to send push notifications perfectly fine. Now I have to manually go into the app and refresh every time. I tried uninstalling the app and nothing changed. I also double checked my push notification settings, and they are the same as before. I also have the iphone 5c if that helps. Anyone else have this problem or know how to fix it?
  • My iphone's lock screen is gone only the wallpaper is showing I got ios7 early and it constantly glitches! The lock screen is gone ( the slide to unlock and all that!) Only wallpaper and status bar is visible
  • My iPhone 6 (iOS 9) is showing the wrong amount of minutes next to updates on my lock screen? For example, if I got a text 9 minutes ago, instead of saying "9 min" next to the text (on my lockscreen), it will say "3 min" instead. I don't know why it's started doing this. I think it's probably a small problem with iOS 9 or I accidentally messed something up when I created a new iCloud account last week, which is around when this started. Does anybody know how to fix this?