I was facing some problem (connection from iPhone hotspot) so I installed wicd network manager but that was not of any good so I unistalled it but then tray icon of networks has gone. I talked about something as shown in image.
Now luckily usb connection from iPhone is working fine. Earlier it used to give problem. Sometime it could connect easily sometime it does not.
But I don't know how to select from other available wifi connections.
I want to restore as shown in image. Also, I want to restore ethernet. Mine is realtek hardware.