My Vodafone signal has always been appalling, but worse over the last few days. Maybe has something to do with the launch of 4G? It's always been the case that when I walk home from Liverpool Street, I have no signal until I get to the southern end of London Bridge...my iphone says it has 3G at fu strength, but it clearly doesn't as nothing works on it - no emails, no calls etc
I'll be leaving Vodafone when my contract expires in December.
Urrr totally untrue the 'cells' are not switched over to 4G, it's a supplementary technology that utilises additional equipment and different radio spectrum. You're experience is more likely to be due to cell site rationalisation that's occurring as a result of the merger.