Im using Twenty Thirteen on WordPress 3.6 and I uploaded a new header image to my site using the wordpress dashboard for the theme editor using a 1600 x 230 image. It looks perfect on a PC. But when viewing my site on an iPad or an iPhone the sides of the header image gets cropped. Quite a bit more on the iPhone. If this is a mobile compatible theme for devices then why does it not re-size the header image?
Here is my website: https://bradleysapplianceservice.ca/
Please help, maybe I'm missing something in my settings?