Tmonews reports that T-Mobile is prepping an anti-AT&T ad campaign in retaliation against the full page anti-T-Mobile ads that AT&T posted earlier in The New York Times, The Wall Street Journal, and USA Today, criticizing T-Mobile for dropped calls and slow download speeds.

The war between AT&T and T-Mobile began in January, when T-Mobile CEO John Legere called the AT&T network “crap,” though the relationship between the two carriers soured after AT&T failed to purchase T-Mobile following objections from the Federal Communications Commission and the Department of Justice.

T-Mobile is in the process of lowering their monthly plan costs, this may be the reason that AT&T is attacking T-Mobile.

Source [MacRumors]