As of today, data usage on my iPhone 4S is no longer working. Worked fine up until today. I hadn't changed any settings before it stopped working.
Ting customer service tried several things, such as dialing ##873283# , none of which worked. Although the guy I spoke to did say that he had another iPhone 4S user call in today with the same problem. He suggested updating the software to the most recent update (9.x, i would assume) and/or do a factory reset. But I don't want to do that because it will just slow down the phone even more.
Any work arounds that anyone knows of?