Since almost a week now, I've had a problem at my home/main work-address where ex-Orange 3G has full signal but incoming and outgoing calls simply fail outright - there's full ex-Orange & MBNL coverage around these parts.

After 6 or so days of nothing showing on the status page, I've got an IM fault reference out of EE but I'm not holding my breath for a quick fix so on my phone 3G is disabled at home. On my wife's Lumia the option (http://************/z5t74g4) for "highest connection speed" is greyed-out, the most I can do is to force MBNL-only until the fault is fixed.. or to port her number out to another network until it's fixed.

Is there another way of disabling 3G, that I'm missing?