I was going through the FAQs on Vodafone 3G website. This is what is written there:
What happens when I move from 3G to 2G network?
[*] When a user moves from 3G to 2G network then all the service supported on Vodafone 3G network like, video call, high speed internet access, etc will not be available, the user will get basic service like what he gets now. If you were on a voice call while moving from 3G to 2G network, the call will continue.
[/list]Now I am not able to understand whether EDGE will be available here...