Well here's the update.....I went into the shop, and after about 20 minutes they managed to swap the micro SIM for a full size SIM - it took several calls to customer support though before they finally managed to do it. However trying to get it to work in the Tab was not fun.
Firstly the settings that were sent via text message did set up the APN but it wouldn't connect. Found the settings on the VF website and entered them manually, also didn't work. Found some different APN settings on the website - also didn't work. Thought maybe its because I hadn't topped up yet? (tho the top-up page is supposed to work even when you don't have credit) - topped up and re-tried all of the above...still no luck :-(
Then finally I got it work using the exact same settings that hadn't worked before (turned out to be the second set I found on the website, not the ones that were loaded automatically), loaded up a couple of websites ok and then it stopped working again. I'm thinking maybe its the cell round here that's a bit flakey or VF are experiencing some network issues - I'll give them another go later/elsewhere before passing final judgement.
But I have to say that overall it hasn't been a simple process to set this up and to be honest I expected more from Vodafone: I have generally had good service over the 10+ years I've had a phone been with them, but I cant help feeling that in this case they don't compare very well to 3 in terms of ease of use (simply put the SIM in your device and it works straight off...no need to spend a couple of hours fiddling around with things).
