iPhone Wifi doesn't Work Abroad w/o AT&T Roaming Package
Does the AT&T firmware on an iPhone prevent you from using wifi abroad if you aren't paying them for international roaming?
When I crossed from the US to Canada, I turned off cellular data, as my settings menu tells me to do in order to restrict all data to wifi. However, when I connect to wifi networks (homes, hotels, cafes, etc, no internet. After 2 weeks of frustration, I break down and pay AT&T $30 more per month for an international roaming plan, and suddenly with the exact same settings, wifi works.
If I cancel my contract with AT&T, how do I make sure my phone doesn't turn back into a square clock/calculator?
iPhone 5, iOS 8.3