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Here I have Samsung Galaxy J3 2017 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, let's use the phone's dialer
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activate the keypad and let's start with the first secret code so let me check the firmware version
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Let's use the asterisk hash 1234 and hash. As you can see the version of your device pops up, you can read the AP number, CP, CSC
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and the model. Let's go back, so now let me check out the firmware version info and also the other stuff
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by using the following code asterisk hash 12580 star 369 hash and as you can see the
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main version pops up, here you can also read a couple of useful information
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Let's go back, this time let me show you how to open the advanced testing menu
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Let's use asterisk hash, 0 asterisk hash and the following menu pops up, here you
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can test the following features for example the colors of your screen, so now let's tap
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red, green, blue, you may test the receiver, vibration and other stuff such as diming
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touch, sleep, speaker, subkey, black, low frequency, front camera and other stuff as well
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Let's go back, now let me show you how to open the battery status mode so let's use
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asterisk hash 0228 hash. As you can see the battery status pops up, here you can read a couple of useful information
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about your battery. Let me go back, this time let me open the USB settings mode so let's use asterisk hash
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0808 hash. The USB settings pops up, here you can change the USB mode, let me go back and now it's
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time to open the advanced firmware version so let's use asterisk hash 2663 hash
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As you can see here you can use and read the following menu, to quit let's use the back
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key and at the end let me show you how to check email number, let's use asterisk hash
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06 hash, the email number and also the serial number pops up, so tap OK to close it and
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basically that's it, everything went well, thank you for watching, please subscribe our
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channel, leave thumbs up under the video