firewall in unrooted telephones

Why the firewall aplication is not available for not rooted smartphones?

Android operational system limitations. You need root access rights to block/monitor other applications to connect.

Incredible, one of the most important functions don´t work in android smartphones.

yes, unfortunately, the firewall can just be modified with root permissions.

Hi All,

I am still curious how to install firewall into my samsung android version 4.1.1?

I can’t found it in my device so far.

Cheers

Is your phone rooted?