It sure took AT&T a while to realize that people who are deaf have a hard time using their devices, but luckily their new Text Accessibility Plan directly addresses that issue. The plan targets people who have a speech or hearing impairment, and is available exclusively for the iPhone. Customers who sign up for the plan will receive unlimited text messaging, web browsing, and e-mail. No phone minutes are included, but the plan has a pay-per-use fee of 40 cents per minute. In addition, AT&T offers a Mobile Magnifier and Mobile Speak options to help people see and hear better on the go, respectively. The catch? Only people with “qualifying disabilities” will, well, qualify.