"Smile" was released to the iTunes Store in the United Kingdom in the spring of 2006 and spent its first week at number 1 on the iTunes chart, before entering the main UK Singles Chart at number thirteen, based on download sales alone.The next week, on the issue of 15 July 2006, it rose to the summit of the chart, selling 39,501 copies, knocking Shakira's "Hips Don't Lie" off the top spot and spending two consecutive weeks there.