When I do that, I get No Coverage. What gets me is that a week ago, the coverage was excellent - it is almost as if 3G has been switch off on that tower. And I can't entertain the idea of demand as the signal remains EDGE through the night - like 4 in the morning still edge. Can MTN be asked to look into the tower? I had great use for the 3G but the edge cannot even download email without timing out.
That's the only issue with 3G only setting. you can't get continuous coverage. I use my Mobile Data a lot in the car so I definitely wouldn't use that setting.
Maybe we should log a coverage enquiry directly with MTN and see what they have to say?