Verizon (NYSE: VZ) has yet to officially roll out its own iPhone, but it's never too early for a little game theory.

Shortly after announcing that it would initially offer unlimited data plans, AT&T (NYSE: T) has reportedly begun offering unlimited data plans to lock up iPhone owners on its network. 

AT&T had put an end to offering unlimited data plans to new smartphone users this past summer, feeling that tiered plans would either pad its coffers or free up its clogged network. However, the playing field has changed now that Apple (Nasdaq: AAPL) will sell its iPhones starting next month through two carriers.

Competition is good for consumers, but it may force unlimited-data plans to live on now that neither party will want to be the one to blink first.

Briefly in the news
And now let's take a quick look at some of the other stories that shaped our week.

  • E*TRADE (Nasdaq: ETFC) posted a charge-laden loss in its latest quarter, but the discount broker is holding up just fine as it grows its account base on the brokerage side and diminishes its delinquencies on the banking end.
  • Margins continue to improve at Cirrus Logic (Nasdaq: CRUS). The audio-chip specialist saw its fiscal-third-quarter profit double on a 47% spike in revenue.
  • Under Armour (NYSE: UA) shook the sweat off by topping a market-thumping fourth quarter with a boost to its guidance for the year ahead. That's one way to put the "performance" in performance athletic apparel.
  • Netflix (Nasdaq: NFLX) silenced the critics with another blowout quarter. It's hard to bet against an army of 20 million couch potatoes.

Until next week, I remain,

Rick Munarriz

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Under Armour is a Motley Fool Rule Breakers recommendation and a Motley Fool Hidden Gems pick. Apple and Netflix are Motley Fool Stock Advisor picks. The Fool has written puts on Apple and owns shares of Apple, Cirrus Logic, and Under Armour. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors.

Longtime Fool contributor Rick Munarriz recommends windshield wiper fluid when trying to look back. He owns shares of Netflix and is also part of the Rule Breakers newsletter research team, seeking out tomorrow's ultimate growth stocks a day early. The Fool has a disclosure policy.