There are few services more essential for many Americans than their wireless phone service.

We live in a constantly connected world, and having access to a fast and reliable internet connection in your pocket is essential for modern life. That positions the three dominant wireless carriers in the United States to profit for years to come. Their scale and the costs of building a wireless network will make it difficult for any new competitor to come in and compete.

So investors looking to own a piece of the U.S. wireless industry will have to choose between AT (NYSE: T), T-Mobile (NASDAQ: TMUS), and Verizon Communications (NYSE: VZ). Let's take a look at their most recent earnings results and their outlooks to determine which is most deserving of your investment.

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Source Fool.com