I upgraded my data plan from 300mb to 3gb recently. My cycle starts on the 24th, and I changed it on May 27th (4 days into it). Before I upgraded, I had used 66 out of 300 mb.
On the ATT billing page, it says my data charges will be prorated, but I can't find a clear answer to how this will affect my bill and usage. How much data am I allotted from now until June 24th, and how much will I have to pay for this upgrade on my next bill?