The popularity of the Apple iPhone has led to a huge secondary industry churning out all kinds of accessories for the smartphone.

From protective gear like cases and products aimed at extending the battery life, to attachments that allow you to connect musical instruments.

Here IBTimes UK rounds up the 10 best bits of kit to connect to Apple's flagship smartphone.

Click the arrow button in image above to begin the slideshow.

Featuring products from IK Multimedia, Parrot, Dexim, Mophie, Optoma, Think Flood, Audeo, TDK, Scosche and Ion Audio.