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Here I have Samsung Galaxy Note 8 and let me show you how to use secret codes on the
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following device. So at the very beginning let's start by using your home screen
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Here you have to open the phone's dialer by using the phone icon and let's activate the keypad
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Let's start by checking the version of the device, so let's type in star pound, 1, 2
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3, 4 and pound. As you can see the version of the phone just pops up, you can read the AP, CP, CSC, exact
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model and other stuff. Let's go back. Now let me show you how to check the main versions of the software and the hardware
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info, let's use the star pound, 1, 2, 5, 8, 0, star, 3, 6, 9, pound
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As you can see the main version just pops up, here you've got some more useful information
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about your device. So let's go back by using the back arrow, this time let me open the test mode, so let's
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use the star pound, 7, 3, 5, 3 and pound. As you can see the following menu pops up, here you can navigate by tapping appropriate
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options, let's choose the melody to test the melody, let's select vibration, you can test
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the speaker, timing, camera and other stuff such as the front camera, bluetooth, dot mode
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proximity sensor, light sensor and a lot of more. Let's go back by using the back arrow and this time let me open the other testing menu
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so let's use the star pound, 0, star pound. As you can see the following mode pops up, here you can test the colors of the screen
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red, green, blue, you may test the receiver, vibration and other stuff such as the camera
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speaker, the subkey LED, black screen and a lot of more. Let's go back by using your back arrow, let me quit this test mode, let me just increase
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the brightness and let me show you how to enter the service mode on the following device
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so let's use star pound, 0, 0, 1, 1 and pound. And this is the service mode, here you can read the service information and you can also
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choose the more key in order to for example use the key input or for example to have some help
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Let's go back and this time let me open the battery status, so let's type in star pound
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0, 2, 2, 8, pound. As you can see the battery status pops up, you can read the level of your battery, level
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blocks, current, charger, voltage and other stuff. Let's go back, this time let me open the USB settings, so let's use star hash, 0, 8, 0, 8 and pound
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As you can see the USB setting pops up, here you can change the USB settings, you can change
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the USB mode and save the following changes. Let's go back, at the end let me show you how to check the email number by using the
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secret code, so let's use star pound, 0, 6, pound and the email number should pops up
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right here on the screen. With the barcodes you can also read the serial number right here
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Let's tap OK to close this window, let's go back and now you may use your device in a
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normal mode. So that's it, thank you for watching, please subscribe our channel and leave thumbs up
