Secret phone diagnosis
Secret phone diagnosis: Before you hire to buy a new or used Samsung phone, use this secret code, *#0*#, which must be entered using the dial-up keypad. This will trigger the test window, where you can make sure your phone's built-in functions are working properly
Attention! Some manufacturers block code-based diagnostics on Samsung smartphones and tablets, but most Samsung Galaxy phones have a secret diagnostic mode (on my LG, this feature does not work)
Secret phone diagnosis
The easiest way is by using the keypad on your phone. Just touch the dial on the Samsung home page by tapping the green button with phone icon
Using the keypad, enter the code *#0*# (without making a call)
Immediately after entering the last character, automatically appears the test image. Attention! If nothing happens after entering the code, this feature is disabled on the device
The most important features
Touch the "Receiver" button. A white screen is displayed, accompanied by a whale-hear ringtone or whistling sound. Here, press the phone Back button twice to return to the main test page
The button tests the phone vibration engine. The screen will be black, followed by a continuous vibration. Touch the screen to go back
Touch the "Mega Cam" button to test the main camera. Use the volume keys to zoom in or out, then press the camera at the bottom of the screen to take a picture. Save the test image in gallery and touch the Back phone button to return to the main test page
By pressing the "Sensor" button, you can test the accelerometer, proximity sensor, barometer, light sensor, gyroscope, magnetic sensor, and fingerprint scanner
- Accelerometer: Controls what motion is detected by shaking the device up and down
- Proximity Sensor: Test the proximity sensor of the device. If you cover the phone with your palm, the screen turns green if the proximity sensor works
- Barometer: This sensor is primarily responsible for tracking altitudes and helps with more accurate GPS measurements. Touch Barometer Selftest to inform you immediately whether it works or not
- Lights sensor: Touch "Light Sensor", and then insert the phone into a different light intensity. Measures three levels, "Level 1" from low to level 3 to extremely bright
- Gyroscope: Measures rotation of the device. You can test by touching "Display" or "Charts" manually or rotate, then read the values displayed on the screen
- Magnetic sensor: The fingerprint sensor tests the fingerprint scanner. Touch "Standard Scan" to start the test
Press the "Touch" button, where you can press the squares individually, or continuously with your finger, where you can watch the squares. Finally, if all the squares or green, you will automatically return to the main page
By pressing the "Hibernation" button, test the sleep mode and the automatic wake up of the device. After awakening, it will return as if you used it normally
The "Speaker" button tests the receiver's audio output, where you can hear a sample song, then press the "Speaker" button to return to the main test page
To test the front camera, touch the "Front Cam" button. This activates the front camera, where you can take pictures of your face (Selfie). Test photos are automatically stored in the gallery. To return, tap the rear camera button a few times
Test the phone's headset and start the test by pressing the button. You can select 100 Hz, 200 Hz and 300 Hz, and each time you put the ear on the headset of your phone when you hear sounds. After completing the tests, you can return to the main diagnostic page by tapping the phone button twice Back
Note: If one of the above does not work, it means the device is faulty. Do not buy it.
The devices are sophisticated, that regular maintenance is necessary ...
If you feel your tablet or phone slows down during use, you have two programs
Description how to download images on your phone ...
Windows Phone will connect with Zune software on the PC. Update phone
Disable Window animation scale - Animator duration scale - Transition scale
Turn off unwanted phone calls if you are disturbed by malicious calls
All phones have an International Mobile Equipment Identity
Install this game to test the performance of your phone
Press and hold the Volume Down Button and Power Button for 1-2 seconds ...
Remain useless files after every install / uninstall. Spyware and viruses ...
If your Windows 10 PC needs cleaning, here are a step-by-step process ...
After each program uninstalled remain un-deleted data on your drive
Speed Up: Disable programs you don't need. Clean Out Programs that Launch ...
Modify WaitToKillApp and HungAppTimeout for shutdown
Performance options apply useful features, but affect performance
Always keep the system up to date by updating the drivers on your computer
Burning Windows ISO file with program Rufus on a faster USB flash
Win7, 8.1, 10 or Android, Linux compatible, high resolution wallpapers ...
Site content, text, tips, descriptions, images, RegTweak.exe program is created to the «webmaster», under the protection of Creative Commons, Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0). Total license you can read here: Creative Commons (4.0). Copy, distribute, tips, descriptions can be used for personal use only with webmaster permission, and with backlinks display
The site was released in 2007. After Windows'98, the first descriptions were made for XP, however, due to the cessation of Microsoft's support for XP (Experience), Windows7 and Vista descriptions have been deleted. At the end of October 2014, tips for Windows 10 have been added, but with the spread of smart phones and tablets, it has become important to transform the site into a "friendly mobile receptive". This was in the early months of 2017, as of April 2018, the new descriptions appear on the Accelerated Mobile Pages (AMP), corresponding to a new standard designed by Google to accelerate the AMP HTML content known as "purified code"
Caution: Descriptions may contain errors, use at your own risk