AT&T’s hurry to end unlimited wireless data plans for its customers, many of which are using popular Apple iPhone and iPad devices, signals AT&T’s overburdened network can no longer handle customer demand.  With the threat of even higher data usage from today’s release of the next generation iPhone, which will highlight bandwidth-intensive video conferencing and streaming, AT&T put the brakes on before new customers even activate their new phone.

With a penalization program in place, AT&T is sending a message to customers contemplating owning the newest generation of smartphones that its network is in no position to actually provide service to those devices, particularly bandwidth-heavy video streaming.

Customers who dare use these video streaming services face the prospect of paying an overlimit fee up to $15 for just 200 megabytes of data.  That’s a compelling reason to think twice about every high bandwidth application. And that may be exactly the point for a network that suffers from congestion problems in several major American cities.

AT&T has consistently ranked at the bottom of consumer surveys done by credible organizations like Consumer Reports, typically because of network capacity issues.  Yet the carrier also charges, on average, the highest out-the-door price among the four major carriers — an average of $134 a month for a two-phone plan with a data package.  That’s $20 higher than either T-Mobile or Sprint, eight dollars more than Verizon Wireless.

Ranked rock-bottom for voice quality, downright lousy for customer service, and only average for its other services, AT&T has simply not kept up.  Yet AT&T raked in more than 13 billion dollars in profits in wireless last year.  The New York Times reports AT&T has at least 33 million smartphone customers, many committed to AT&T’s required $30 data plan.  That represents more than $900 million dollars per month in revenue — $10.8 billion dollars annually, and that’s for data services alone.

Yet the percentage of the company’s investments committed to expanding its network, measured under AT&T’s 2009 annual financial report, has not kept up with its enormous iPhone customer base, on AT&T’s network since 2007.

Source: AT&T's 2009 Annual Report -- AT&T's capital investments in its network and service don't keep up with the enormous increase in its Apple iPhone customer base introduced to AT&T service. Last year showed a dramatic reduction in investment when compared with 2008. AT&T is not exactly plowing all of its wireless profits back into its wireless business.

According to TownHall Investment Research, between January 2006 and September 2009, AT&T spent about $21.6 billion, or $308 per subscriber, on its wireless network. During that same period, Verizon Wireless spent about $25.4 billion, or nearly $353 per subscriber.  Verizon has outspent AT&T each of the past three years on service upgrades without the revenue benefits a stampede of iPhone-owning customers brings.  That gap has now grown into a nearly $4 billion dollars difference between the two providers in infrastructure upgrades.

“This is the story of a wireless carrier that is determined not to invest enough to meet the demand of users, but has decided to manage its network as a scarce resource,” says Chris Riley, policy counsel for Free Press. “This is what Wall Street loves: Reduce your expenditures and increase your revenues.”

In a barely competitive wireless marketplace, AT&T can afford to force customers to pay dramatically higher data costs in the months and years ahead, especially for iPhone customers who must use AT&T if they want a subsidized phone.  Even if a customer leaves, AT&T will earn up to $325 in cancellation penalties.

That iPhone exclusivity agreement with Apple has been an unlimited goldmine for AT&T. AT&T’s wireless business drives AT&T’s overall profitability, generating 57 percent of its operating income according to Gerard Hallaren, director of research at TownHall.