AT&T has started to throttle—or downgrade the data speeds of—customers on unlimited data plans that go over 2GB in data usage for the month. As AT&T customer John Cozen wrote on his blog, “I received a message during my last billing cycle, warning I was in the top 5% of my region and would experience reduced data speeds next time I reach that level of data use. I immediately checked my data usage on the AT&T iOS app.…
