AT&T has announced that it will make its Mobile Share plans available starting August 23. Announced in July, the plans are designed for customers with multiple devices, and offer a set amount of data and unlimited talk and text; an additional fee is charged for each device on the plan. Plans start at $40 for 1GB of monthly data and go up to $200 for 20GB, while the cost of adding each smartphone to the plan varies based on the amount of data included—each…
