A pretty good component but some issues.
It has different themes for iphone, tablet, smartphone, wap, imode (don't know what that is even), but while good, it means if you want to edit a theme you have to do all 5 separately. I just started on the iphone one, but the basic css file didn't cover everything and remnants of iphones theme were across a number of different css/files. I gave up trying to figure out where all the instances of the ugly blue pinstripe was.
The detection isn't always that great. On Galaxy S5 there was none and the desktop site loaded. On Nokia Lumia and Blackberry the menus were broken, so I just set all phones to show the iphone template.
Would be better if there were a setting to just load the phone template if the screen width detected is less than say 350 pixels, that way it's guaranteed to load. But no such option existed from what I could see so your left with detection that may not work.
I decided to try another extension instead, but there was no way of even disabling this component. Even with the component unpublished it still operated, so I had to completely uninstall to test something else.
Also while it's free, the nice looking templates are considerably higher priced. Apparently you have to pay to get rid of the adverts, though I'd just hardcode those out personally.
I could have continued with it, but in the end I went with Responsivizer and found it was quite a bit superior in every way, but does come with a pricetag.