I'm moving and won't have internet access at the new place for a few days while I get it set up. I was thinking about getting one of those pay as you go mobile broadband dongles to tide me over, as I understand it you just top it up and can use that allowance until it runs out (so useful for temporary internet access) - do I have to get one from the same network that my mobile phone is on, or can I just get any one? (The 3 one looks cheaper/better value) Also, do I need a 3G phone, or for that matter a working mobile phone? Mine is dead and I can't get it to charge - it's too old to be 3G as well. (Hoping to pick up a cheap/second hand phone to actually use but prob won't be 3G either)