Android: Get a closer look at the inner workings of your phone by using the diagnostic codes technicians use to trouble shoot everything from an unresponsive GPS device to backlight problems.
If you've ever had to take your phone in for service or had a technician help you over the phone you're familiar with the odd series of # symbols and numbers they'll have you enter to help diagnose your situation. Tweaking with Vishal, a computer tips and tricks blog, put together a list of codes for Android phones. In the screenshot above, for example, we keyed in *#*#4636#*#* to access a variety of diagnostic information including battery readings and other information about the phone.
You can check out more codes at the link below. We'd strongly caution you to read carefully what each diagnostic code does before just wantonly punching them in. Some of the codes do very powerful things like wipe the firmware or delete the vendor-specific updates from your Android OS.
Have a tip or trick to share for getting to the secret menus and hidden diagnostic tools in other phones? Let's hear about it in the comments. Thanks RJackson!
Google Android's Hidden Secret Codes [Tweaking with Vishal via #androidexperts]