Besides obvious features like a touchscreen and biometric sensors, the modern smartphone comes with an array of state-of-the-art hardware in the form of various sensors that help your device sense the environment around it. And if you have a Samsung handset, chances are, you have a handy feature built in that enables you to check if these sensors are functioning 100 percent.Unbeknownst to a lot of Samsung fans, most Galaxy phones have a secret diagnostic mode built in which can be accessed simply by inputting a little-known code. Best of all, this feature is extremely easy to access and is a handy way of testing out a new or used phone to ensure it's in perfect running order before you commit to buying it.Don't Miss: Accessing the Secret Diagnostic MenuBefore we begin, it's important to note that this feature may not be available on your device. Certain carriers, most notably Verizon and Sprint, have been known to block the code-based diagnostic mode on their Samsung smartphones and tablets, though newer phones from Sprint like the Galaxy S6 seem to have this functionality restored.To get the ball rolling, simply open your Samsung's phone app. From there, enter.#0.# using the dial pad, and the phone will immediately go into its secret diagnostic mode. Note that the process is automatic, so there's no need to tap on the green call button to enter the command. So if you enter the code and nothing happens, the feature is disabled on your device.
Solution To set up the NETWORK setup options, please refer to the following instructions. How to use NETWORK SETUP. To obtain information on the proper settings, check the network settings on your computer or contact your Internet provider.
Receiver & VibrationTo check if your phone's receiver is working properly, tap on the 'Receiver' button to commence testing. Doing so should take you to a white screen, accompanied by a clearly audible dial tone.
Once you're satisfied, simply tap on the back button twice to go back to the main test page.' Vibration' tests out your phone's vibration motor. Your screen will go black once you tap on the 'Vibration' button, accompanied by a constant vibration. Tap on the screen once to exit this test and go back to the main test screen.
DimmingTapping on 'Dimming' will bring you to a red, green, and blue screen. The screen will then alternate between dimming and brightening whenever you tap the screen. To exit back to the main test page, press the volume up button.
SensorTapping on the 'Sensor' button will yield a test page for a host of sensors — namely the accelerometer, proximity sensor, barometer, light sensor, gyroscope, magnetic sensor, HRM, and fingerprint scanner. I'll go over all eight of these submenus in separate sections below. AccelerometerAccelerometers are vital sensors that are used to detect the orientation of the phone, primarily measuring linear acceleration of movement. To check for its functionality, tap on either 'Image Test' to check for landscape-to-portrait transitions or 'Graph' to measure how well the sensor detects movement by shaking your device up and down. TouchYour phone's touchscreen is easily its most important component you can test, as it's generally required to gain access and interact with your handset.
So to test out this functionality and check for any dead zones, tap on the 'Touch' button to get started. Now, trace the squares on the screen to complete the X-marked box, which should turn green. Once done, you'll be automatically taken back to the main test page. Alternatively, you can also exit to the main test page by pressing the volume up button. Sleep & SpeakerTapping on the 'Sleep' button will test out your device's sleep functionality. Doing so should immediately put your phone into sleep mode. Once done, wake your phone as you normally would, and you'll automatically be taken back to the main diagnostic page.Tap on the 'Speaker' button if you want to test out your handset's audio output, which in turn plays a sample song that you can listen to.
Once you've verified that your speakers are good, simply tap on the 'Speaker' button again to end the test. Sub Key'Sub Key' tests out your hardware buttons, along with the virtual home button if you have a Note 8 or S8.
Pressing each button changes the screen color to help verify their functionality. Tap on the exit button in the middle of the screen to exit back to the main diagnostic page. LED & Low FrequencyThe LED test checks for the functionality of your device's LED notification light. Running the test is straightforward — simply tap on the 'LED' button, then tap on the screen to change the LED's color from red, to green, and finally to blue. Tap on the screen one last time to end the test and go back to the main diagnostics page.'
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Low Frequency' tests out your phone's earpiece, and tapping on the button to commence testing will bring you to the 'Low Frequency Test' page. From there, tap on 100 Hz, 200 Hz, and 300 Hz and place your ear against the phone's earpiece each time you select a frequency to check for low buzzing noise.
Once you've completed the tests, you can exit back to the main diagnostics page by tapping on the back button twice. Barcode Emulator TestIf you need to test out your handset's ability to properly generate barcodes, tap on 'Barcode Emulator Test.' Doing so will take you to a page containing different barcodes. My candy love hack no survey. From there simply tap on each barcode, and scan them with a barcode scanner to ensure they're being properly read. Once you're done testing, tap on the back button twice to go back to the main diagnostic page. Hall IC, MST & MLC TestsThe Hall IC sensor detects magnetic fields and is primarily used to detect magnetic flip covers to automatically put the phone to sleep when a magnet within the flip cover touches the phone. The test itself doesn't do much and simply gives a confirmation that the Hall IC functions properly.MST, which stands for magnetic secure transmission, enables devices to temporarily read your phone as a credit card.
This sensor is essential when using payment services such as Samsung Pay. MLC, on the other hand, is technology that's utilized in fingerprint sensors. There's not much in the way of tests in this area, which seems to be geared more towards developers to tinker with. Iris Camera TestLast but not least, the 'Iris Camera Test' tests out the infrared iris camera that's used to unlock your device.
Tapping on the button pulls up your iris camera for you to align your eyes with, and will instantly close and go back to the main diagnostic page once it's successfully scanned your iris. Exiting Out of HwModuleTest ModeOnce you're done performing your diagnostic tests, you can now exit HwModuleTest Mode. To do so, simply tap on the back button twice to go back to your phone's dialer, then exit from there as you normally would. You're now free to go on with the rest of your day, knowing that all is right with your beloved device!Don't Miss:. Follow Gadget Hacks on, and.
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