US number-two AT&T has launched a set of data plans to allow customers to access data on up to 10 devices. The Mobile Share plans – available in August – start at US$40 per month for 1GB of data with an additional US$45 per device, moving up to US$200 for 20GB of data, with an extra US$30 per device. The plans also include unlimited voice calls and text messages. US number-one Verizon Wireless launched its similar Share Everything Plans in June.