I recently bought a used Nexus One phone from craigslist. It has an AMOLED screen which uses less battery when displaying black pixels. I’m a bit of a battery Nazi, so I created a pure black wallpaper.
If you’re viewing this post on a Nexus One and would like to use this black wallpaper…
- Click here to view the wallpaper image.
- Touch and hold on the image until a menu appears.
- Choose “Set as wallpaper”.
Edit (1/25/11):
Per Kadin’s suggestion, if you’re viewing this post on a computer, you can use your Nexus One’s barcode scanner with this qr code to get the black background as well.

Here’s how I made the black background.
- I googled “nexus one wallpaper resolution” to get the correct dimensions for the Nexus One wallpaper which is 960×800 pixels.
- I used Aviary’s online image editor Phoenix to create a 960×800 image with a black background.
License

To the extent possible under law, Phloating Man has waived all copyright and related or neighboring rights to “Pure Black Nexus One Wallpaper“.
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For ease of getting the file onto a phone, you might want to provide a QR code for people to scan.
The easiest way I’m aware of would just be to link to
http://chart.apis.google.com/chart?cht=qr&chs=100x100&chl=http://phloatingman.files.wordpress.com/2010/08/pure_black_nexus_one_wallpaper_960x800.pngI just tested that and it worked for me. Thanks for making the file available!
@Kadin Sweet, thanks for the tip! I never knew google charts made qr codes too..
You can change the wallpaper to a smaller resolution. Smallest one that I managed to use as wallpaper is 5×3. Not sure whether this will task N1 by stretching the wallpaper though.