Not fit for Purpose
I have been using the Vodafone system for some time and had no end of problems.
Their network connectivity is poor, even in the centre of Basingstoke (which should have proper 3G by now!)
Their support is completely geared to Phone customers and does not recognise the phone numbers assigned to dongles.
One PAYG dongle they sold me uploaded its software into my PC which ran then happily announced it was not compatible with the dongle it had been loaded into.
I frequently spent more time trying to get the Dongle to work properly with Windows XP than I have online. I know XP is receiving Euthansia from Microsoft at the moment but 1000,s of notebooks with XP loaded have been sold and these are natural partners to a PAYG dongle and will be in use for a few years to come at least.
When you can get it to work it is useful but the uphill battles...
Even adding credit to the thing is very difficult dueto a website problem at time of writing. All in all Vodafone should make Huawai iron out the problems properly, work on its web and phone support and return to the market with a properly sorted product. Give me a job and I will sort it out for them!
Calling their suport from a non-vodafone phone is no doubt also expensive but after this experience I am definitely not interested in any of thier voice products.
A pity really as it is a potentially useful product - if they sort the bugs out.