An AT&T Inc. logo is displayed in the new AT&T Inc. store in Chicago, Illinois, U.S., on Thursday, Aug. 30, 2012. AT&T Inc. is refining its retail strategy with its first flagship store, a location on Chicago's Michigan Avenue that goes beyond phones and tablets to show services such as fitness applications and "smartcar" features. Photographer: Tim Boyle/Bloomberg via Getty Images

AT&T is bringing back unlimited data. The unlimited plan was discontinued two years ago, but now the plan is resuscitating as a cross-promotion with its DirecTV and U-verse television services.

For unlimited data, you will have to dish out $100 per month, whereas, for every smartphone that you add, you will have to pay $40 per month. This offering also includes another cost effective plan in which when you add the fourth smartphone to the plan, the fourth line will be free of all costs. The total price that you will have to pay comes down to $180, excluding tax and other fees for unlimited data, talk and text on four lines. However, you may find it frustrating, but you will have to pay $220 for the first two months before the credit kicks in.

Before blindly rushing with excitement to sign up for this plan, it is very important that you keep in your notice that you have to be a DirecTV or U-verse subscriber to receive the unlimited data plan. So, if you don’t live in a U-verse market, or can’t install a DirecTV satellite dish, you will not be granted access to this plan and will have to settle for the standard variant.

As per the existing promotions by the company, you will get $10 off you monthly bill when you sync up your television with your AT&T plan.

This move by the company can be justified as a way of leveraging the video-on-the-go service – DirecTV in this occasion. Data allowance is the main issue of the user when it comes to accessing these services. Therefore, bare in mind that the real cost of your current usage will amount to and then select the unlimited plan. The price that you will pay is roughly equal to the 20GB Mobile Share Value data bucket, which will set you back $200 per month.