I am using PPP Widget 2 and when I try to connect Airtel 4G dongle with my Asus Zenfone 5, the connect button is disabled and configure button is enabled. Please help me to configure and how to enable the connect button on the PP2 2 widget.
The USB dongles don't need additional configuration. If the phone doesn't detect the modem, then it's possible you are lacking support for the Asus Zenfone 5. There isn't anything you can do to make it work if the divers don't work for the Airtel 4G dongle. Try contacting the developer of PPP Widget and ask him how to configure the modem.