What makes you say that? I haven't seen any other smartphone camera that is better than the iP5. Like the displays, some come close, but still not as good. If you have reference to another phone, please post the model. I'm very curious to see the difference.
Thanks.
iPhone4
1/3.2" 5Mpix backlit sensor
LED flash
3.85 mm f/2.8 lens
touch to focus
Nokia N8
1/1.83" 12Mpix sensor (bigger than most point & shoot cameras, including the Canon S95 and G12 and twice the size as that in the iPhone4)
xenon flash with AF-assist lamp
fast Carl Zeiss lens
active neutral density filter
face-detection with red-eye removal
Additionally, the "more megapixels isn't always better" argument doesn't apply here as the N8's massively larger sensor results in it having the same pixel size as those in the iPhone4 - 1.75nm
sources:
http://falklumo.blogspot.com/2010/06/apple-iphone-4-camera-specs.html
http://en.wikipedia.org/wiki/Image_sensor_format
http://blog.gsmarena.com/how-large-is-the-nokia-n8-12-megapixel-large-image-sensor/
http://conversations.nokia.com/2010/07/12/nokia-n8-photography-all-the-faqs/