I am out of my home country, so data is pretty expensive (~ $20 USD/mb). However, I do have an international SMS package.
In iOS 7, if I turn Data Roaming off, I cannot send or receive SMS.
If I turn Data Roaming on and:
- disable Cellular Data for all apps
- disable background updates
- disable push data
I can still see my data usage ticking up at ~100kb per minute. AT&T obviously distinguishes between SMS and data, but it seems iOS 7 does not...
Is there a way to ensure I can send and receive SMS but keep all other data usage disabled?