ISO comparison
Forgetting about the Android part of this camera for the moment, overall photo quality from the Nikon Coolpix S800c is above average for a point-and-shoot with its features, suitable for prints up to 8x10 or slightly larger and Web use. You will get better photos (and videos, for that matter) from it than from a smartphone, barring top models like the Samsung Galaxy S3, HTC One X, Nokia 808 PureView (and probably the Lumia 920), or Apple iPhone 5. Even against those, it's better in low light.
Though its sensitivity settings run from ISO 125 to ISO 3200, the S800c is best used with plenty of light to keep sensitivity below ISO 400. Regardless of sensitivity, photos can appear somewhat soft and benefit from sharpening with photo-editing software. There's a Fixed Range Auto option that will limit you to ISO 125-400; I recommend using it in daylight when possible.
The two highest ISOs -- 1600 and 3200 -- should only be used in emergencies, mainly because the colors get very washed out and the noise reduction makes subjects appear smeary and flat, and actually, colors are so bad at ISO 3200 you probably shouldn't use it at all.
Color
Macro
Zoom range
Lens distortion
Burst shooting
The S800c can capture three-shot bursts at 7.9 frames per second. However, focus and exposure are set at the first shot, so if your subject is moving, chances are good all three shots won't be in focus.
The camera also has 60fps and 120fps bursts; the former captures up to 25 images at a resolution of 1 megapixel, and the latter grabs up to 50 VGA-quality shots at a press of the shutter release. There's a substantial wait while the camera stores all those photos, but if you're trying to capture a specific moment in time, this is your best bet with this camera. Also, with all of these modes, the focus, exposure, and white balance are set with the first photo. If you have a fast-moving subject, like someone running, there's a good chance your subject won't be in focus for all of the photos.