Since September 2011, Apple (NASDAQ:AAPL) has announced fewer than a dozen new wireless carriers selling the iPhone. Currently, the total number of carriers that offer the iPhone stands at about 240. Samsung, on the other hand, has devices on nearly all of the world's 800 carriers. This structural issue could be hurting the iPhone's long-term growth prospects. In this video, Fool contributor Steve Heller and analyst Rex Moore discuss the issue and what Apple could do to expand its addressable market.

Rex Moore owns shares of Microsoft. Fool contributor Steve Heller owns shares of Apple and Google. The Motley Fool recommends Apple and Google. The Motley Fool owns shares of Apple, Google, and Microsoft. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.