mercutio: my phone is 7.2 megabit i think. something like that, so i'm not eligible for 3gdc or 4g, but i would prefer slightly faster speeds. currently 2degrees is about 3 or 4 times faster on the same phone.
That tells me that possibly 2degrees has a cell site closer to you with less users.
same location. likely to be backhaul issue.
You are saying both 2degrees and Vodafone cell sites are in the same location, or are you in the same location? Because that makes a lot of difference.
And yes, backhaul issues. If you have 3G on a cell site with backhaul contention then adding 4G will not solve those issues. It may well aggravate them in the short term.