I have an iPhone 5s. I recently noticed that my Settings/Mobile page has a "Data Roaming" switch and an "EU Internet" switch:
The first I understand (enable data when roaming in foreign countries), but what does the second do? If I disable "Data Roaming", the "EU Internet" switch is greyed out. I assume it's related to the EU roaming regulations, but what does it actually do? Restrict data roaming to those countries?
In case it's relevant, my SIM plan is provided by Three UK. I have a plan with Feel at Home, (which allows me to use my data/call/text allowance for free in 16 countries - not necessarily EU ones though).