Launched in 2013, Aio was AT&T's prepaid wireless phone service. The name was pronounced as a cheery "A-O." Bright color and expressive hand-drawn visuals encapsulated Aio’s brand promise of "simply, delightfully, more."

The brand was eventually sunset in the wake of an AT&T’s acquisition of Cricket Wireless, but Aio’s playful spirit inspired a reboot to the Cricket visual identity and had positive effects on other aspects of the AT&T brand.