notification alert without unlocking screen on Lollipop Before my phone got upgraded to lollipop, I was able see that I had a missed call,SMS text, other app notification without having to unlock my screen.

Now I have to unlock my screen just to see if I have any notifications, how do I bring back the old ways?
Than you have to change notification settings in your android phone.

GOTO :  Settings > Sounds &amp; Notification > App Notification

In Settings > Sounds &amp; Notification

you can set the all notification setting like , sound , notification light etc.

I hope this help you to solved your problem.