I need to edit the default gateway setting for one of my wireless networks as there is a repeater that for some reason only allows me to connect to a handful of networks but if I'm nearer to it than the main wifi router the phone switches to it. I want to just manually set the default gateway as the main modem router like I have done on my laptop but don't seem to be able to edit the settings in Windows Phone 8 - they're all greyed out.
