Generally, unlimited internet plans are the hallmark of AT&T. The important plus points of the unlimited plans of AT&T are - works with a whopping 10 devices seamlessly, no overages to be incurred by the user, limitless data, talk time and messages. It ensures a hassle-free environment for playing multi-player games, watching HD videos and using message applications. Further, $80/month for 1 line, $190/month for 4 lines and each extra line for $35/month is the price. Specific channels come as add-ons for some plans.
Check: AT&T High Speed Internet Deals