One of the significant changes within the wireless industry over the past few years has been the push by cable companies like and Charter to offer inexpensive wireless services to their customers. On the surface, this appears to be a major risk to telecom giants like AT (NYSE: T).

Comcast's Xfinity Mobile offers a $15 per month plan that comes with 1 GB of data, as well as a $30 per month unlimited plan. Charter's Spectrum Mobile offers similar options, as well as a bundle that includes internet service and one free unlimited wireless line.

It makes sense for cable companies to hook customers on as many services as possible. People don't switch home internet plans very often or switch wireless service providers very often. Get a customer using both, and that customer will likely stick around.

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Source Fool.com