Vodafone now make clear that their advertising that 'unlimited' internet is only 500mb - I've seen it in the windows of their shop. This is to avoid the obvious issue that they advertised deals to be "unlimited" but then alerted customers post agreement that 'unlimited' actually meant '500 MB'. I'm sure the ASA/Trading Standards have had their stick in about this.

It's to stop people using their phones as broadband modems for laptops.

Voda can't start charging you for 500MB+ usage if you signed up to something advertised as unlimited. Even if you've signed a contract that contains a burried clause stating that "where we say unlimited we really mean 500mb".

I'm not a solicitor, but I don't believe that Voda can retain the right to alter contracts signed up to as "Unlimited" to "500 MB" as this would be a material change to a warranted clause. the contract is for provision of x minutes, x texts and unlimited internet. You change one of those and you change the whole deal.

Thus you should be able to reject their change in policy (i.e. charging you for 500MB< usage) as a breach of contract.

Please can someone who knows what their talking about step in on this. I'm assuming a general rule is possible here without reading the t+c's of every users individual contracts?