From 1st September, O2 are introducing data barring when tariff allowances are reached.
This is an opt-in service that allows you to choose to automatically place a data bar on a SIM that has reached its data allowance.
Please be aware, that in some circumstances, this may cause an inconvenience: e.g. key players in the company may require an uninterrupted service, regardless of usage.
For more information, or to opt-in, please email email@example.com
Unfortunately, this is restricted to O2 tariffs only, and as yet we have no forthcoming information about this being available on Vodafone.