BandWidth BandWidth - This is a simple bandwidth tester for testing your WiFi or 3G connection. There are around 26 servers located around the world to test from. There is also an option to test using your own specified server!
* These servers are public and are under load at different times in the day. They may give you a lower speed based on traffic to the server
Dead Pixel Test&Fix This free application will help you detect dead or stucked pixel on your phone screen. It can also help you to repair some kinds of pixel defects
Benchmark Free Benchmark Free - Is your phone fast enough for you? You don't know how fast it is? Try the ultimate Windows Phone benchmarking app. It's free!
The app includes benchmarks for the CPU, memory, storage read and write speed. It also has a comparison page with nice graphs where you can compare how your device compares to other Windows Phones
Display Test Use Display Test to show red, green, blue, black and white screens in order to check your display for defective pixels
LCD_Check This is a tool to help find and check out the Screen pixel on your phone
Pixel Checkup (free) Pixel Checkup (free) - This application helps you find screen damage such as dead pixels. It fills the screen with red, green, blue, white, or black. This makes it easier to see the damage. When you tap the screen, markers are placed to help you keep track of damaged spots. This free version is fully functional. A paid version is available free of advertising
Meme on the go A meme library which displays your favourite Meme's all in one app
Power Wheel Easily calculate Voltage, Current, Power, Resistance on this easy to use calculator
LittleHog Manoeuvre the hedgehog through the maze to get to the flag
LumiaRuler Easy Digital ruler for measuring up to 100mm on your Lumia 800
(Accuracy not guaranteed. This is a third party app not made or in relation to Nokia)
PxLChecker Having trouble finding a dead pixel on your beloved screen? This app may help you find it and fix it