AT&T customers threaten to leave after latest warning

AT&T has rapidly lost phone customers as rivals ramp up deals and discounts on wireless services. Amid these challenges, the carrier recently warned customers of a major change to its wireless plans, sparking backlash and putting the company at risk of additional losses. Last year, Verizon and AT&T doubled down on device promotions and free line offers to lure and retain customers amid elevated switching behavior in the wireless market. More consumers have been searching for lower phone plan prices ami ...