A lot of the pain in your wireless bill is being diminished these days, no matter what carrier you use. Perhaps in response to the threat of cheap, internet-based messaging services like WhatsApp, and definitely in competition with each other, AT&T and T-Mobile have just sweetened their deals.
T-Mobile and CEO John Legere have launched an all-out assault on the mobile wireless industry in the past year, with its industry-shaking "Uncarrier" initiatives and competitive pricing, but for Legere, AT&T has always been a special target. So Legere is probably pleased that T-Mobile has won a court decision prohibiting an AT&T subsidiary from using its color scheme.