Well, it doesn't

The only thing is does, it sets the "autoconnect" setting. It sets autoconnect to any connection. Then it chooses the connection based on connections stored on your phone and the order of those connection.

I would not like to mess around to much with user settings, not more than it's needed, so I am thinking to stick to what it does already. However, in the future it might be possible to implement a sloution, where user can set the connection preferneces.