But they appear in notification centre on iPhone too, or is it just you prefer to have a notification icon persistent on the screen ?
the thing is i often dont interact with a notification. say im busy reading an article or playing a game.......on iOS that notification is gone and wouldn't know unless i went to the home screen or like you said pull down the notification tray. Like i said this is so minor but so not at the same time lol. in android no matter what im doing the notification is always there in the status bar reminding me that i need to do something.