Despite a disappointing sales total last quarter, the iPhone remains the most profitable smartphone in the world. Further, that disappointing sales total from last quarter was the result of pent-up demand from consumers waiting for Apple (Nasdaq: AAPL) to unveil the next iPhone. With the launch of the iPhone 4S and its record-setting sales totals, Apple should easily set new record for sales this holiday season.

However, buying shares of Apple is only one way to play the success of the iPhone. Another way is to buy the makers of the components inside the phone itself. The most expensive components, like flash memory and the touchscreen display, are commoditized and can be sourced from multiple suppliers. However, components like the baseband processor and radio frequency (RF) section of the phone can be highly specialized and sourced from a single company.

To help investors make more sense of the best ways to profit from the iPhone, I created a video series analyzing some of the most important and specialized components within the phone. In each video I look not only at the profit opportunity for the company supplying parts to Apple, but also how much it matters to the company's overall business.

Here's a rundown of the video series by component:

  • Baseband Processor
    The iPhone is known as the "world phone" because of a baseband processor supplied by Qualcomm (Nasdaq: QCOM).
  • Audio
     Cirrus Logic (Nasdaq: CRUS) once again supplies the audio codec inside the phone.
  • Processor
    While Apple designs the A5 processor powering the iPhone, the company licenses its processor architecture from ARM Holdings (Nasdaq: ARMH). While ARM licenses processor designs to many segments and more than 6 billion processors based on its designs were sold last year, the high-end processor designs licensed by Apple and other smartphone makers are increasingly driving ARM's results.
  • Radio Frequency
     Skyworks (Nasdaq: SWKS), Avago (Nasdaq: AVGO), and TriQuint (Nasdaq: TQNT) all won RF spots in the new iPhone. Of the three, TriQuint should see the largest boost to its sales from its inclusion in the phone.
  • Touchscreen controller
     Texas Instruments (NYSE: TXN) supplies the touchscreen controller. However, TI's also an enormous chip company that won't see very much material effect from the small cost of each touchscreen controller.
  • Wi-Fi
     Broadcom (Nasdaq: BRCM) returns to its spot supplying Wi-Fi components inside the iPhone. Despite Broadcom's large size, the total content cost of its iPhone components multiplied against the unit size of iPhone shipments yields a pretty sizeable part of the company's sales total.

We hope you enjoyed the video series on iPhone profit plays. To stay updated on more analysis on the iPhone and the component plays inside it, follow me on Twitter, @bleekertech, or add any of these companies to our new My Watchlist service. It's free and will deliver all the Fool's best news and analysis on all your favorite companies in one central place. Get started today!