Detailed notifications preview

[desmen]

I'm new to android after using iPhone for over 10 years so I'm still learning how to use android. But I have a question about notifications showing up. How can I get notifications that can pop up at the top of the screen to show what it says? All I get is a sound and the icon popping up at the top, my wording might be confusing but think of it as like when iPhone get notifications it shows the whole preview for a bit and then goes away, how can my phone do that 

[meself]

Text or message can set to get a line of what it says i.e preview as for other apps I don't know if that's a option

[LongHiker]

Try going to phone settings -> Notifications-> Notification pop-up style and clicking on Detailed.