Which app is this 'listening'

[Samsung J series User]

I use Home Wifi Alert app from G Play Store to analyze wifi connections and what my apps are doing on my home network.

Under the Connections tab, there's three filters: established, listening, and all.

Under 'established' it lists the apps which are connected and the destination ip. For instance, the native Samsung J web browser has 11 established connections, but I'm not using that app at all. I've only used it to browse 2 pages since purchasing the device this week.

Is that normal?

Besides that, under 'Listening', Facebook messenger, Youtube, and another app I can't identify are listening.

I took a screen shot of the the latter icon but can't attach it here. It's basically a blue circle with a white edged, A4 page in profile format in the circle, with a magnifying glass on an angle in the bottom right corner. I tried to search the app but cannot find it.

Can anyone suggest what that app is? And why is it 'listening'?

Also, I never use YouTube so why would it be listening?

Thanks very much for your help.

 

[Rukbat]

Any app that acts as a server, like your email app, listens on the port some site will use to contact it. I didn't know that YouTube listens, but that would be why. (If you run netstat -a in Windows you'll see a pot of listeners. A lot goes on behind the scenes in a computer connected to the internet.)

I don't know exactly what app that icon belongs to.

 

[ManiacJoe]

Most of the "listens" these days are the social media apps waiting for push notifications about new likes, comments, follows, etc.