I don't think this forum is the place to discuss how to circumvent contracts with providers. If the conditions of the contract are changed, it's common that you may opt out and switch to a different provider (or a different plan with the same provider), that does offer what you want.
That's not even a work around, that's a solution.
Kees
We have been using a iPhone on permanent personal hotspot mode to provide wifi for our various devices for some time now. Three have been offering unlimited tethering but have now restricted this to 4 GB, from 1000 GB. How can we get around this, as I feel that since we are paying for unlimited data, we should get it. What difference does it make whether the data is used through tethering or not?

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