A secret code is defined by this pattern: *#*#code#*#*.
There are multiple ways to trigger them, but the simplest is to directly enter them in the dialer app.
You can install application and enjoy the following benefits:
★ Check used Android phones before buying.
★ Detect the device manufacturer.
★ Detect the operating system version.
★ know the hidden information on the camera.
★ Make backup copies of your data.
★ More devices will be added.
★ Lot of advantages left for you to discover on your own.
Android devices carry a lot of information about the type of device and operating system used in it, you may find it difficult to access to that information.
WARNING: Some manufacturers not allow the use of these codes and they may not work on your device. By using secret codes hack you can change some of your device settings. Use at your own risk!