The four of the big U.S wireless providers are at it again with unlimited data plans.  A while ago, T-Mobile US Inc (NASDAQ:TMUS) and Sprint Corp (NYSE:S) introduced their unlimited data plans.  Before the dust would settle, Verizon Communications Inc. (NYSE:VZ) disclosed the return of its unlimited price plan. This was quickly followed by AT&T Inc. (NYSE:T)’s unlimited offering of its own.

The four are all seeking to take over the 2GB and 4GB market, which to many may have been a rip-off. However, even with the new offers, there is a lot of caution surrounding pricing, promotions, and capabilities.  Remember, the plans from T-Mobile and Sprint initially encountered major issues.

So what exactly are the four carriers offering and what is their differentiator?

There is a lot to consume from what the four are offering. They are all competitive but they also have variations in different items. For example, Verizon and AT & T are offering 22GB of unlimited data, while T-Mobile and Sprint are on 28GB and 23GB respectively. Their video quality is different and so is their hot spot availability.

Basically, we are all cautious about pricing. For each of the carrier, the pricing varies for single and multiple lines. Nonetheless, AT & T will be removing its single requirement. However, with the all the different goodies that they are all offering, they have a bigger differentiator; the coverage area by each of them.

The next question is obvious. Which is the best?

This is dependent on several factors the most vital being the services, their pricing vs. availability. There is also the aspect of how well the network performs, which is more often than not determined by inspecting coverage maps to get the real feel.

There may have been cases of disappointment from each of them in the past but it is also important to appreciate their hard work for the last few years. Given a chance they still have a lot to offer. Meanwhile, T-Mobile’s stock was trading $60.61 a fall of $0.68 or 1.12% while that of Sprint closed at $9.00 a decline of $0.12 or 1.32%.

On the other hand, AT&T’s stock closed at $41.25 witnessing an increase of $0.14 or 0.34%.  Verizon closed at $48.46 an increase of $0.38 or 0.79%.