Apple (NASDAQ:AAPL) is struggling to keep its lead in smartphones as competition -- particularly Samsung and its Google-powered (NASDAQ:GOOGL) Android operating system -- continues to bring the heat. In the video below, Fool contributor Daniel Sparks explains how competition has weighed on Apple shares, and why the company needs a successful iPhone 5S for the stock to have any hope of reviving itself.

What does Apple have in store to make the 5S a hit? Daniel outlines two potential differentiators.

Fool contributor Daniel Sparks has no position in any stocks mentioned. The Motley Fool recommends Apple. The Motley Fool owns shares of Apple. 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.