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Here I have Samsung Galaxy S8 Plus and let me show you how to use secret codes on the
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following phone. So at the very beginning let's unlock the screen, let's open the phone's dialer right
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here, let's activate keypad and now you can use all secret codes that works on this device
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At the very beginning let's check the version of your device, so let me use the following
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code, star, hash, 1, 2, 3, 4, hash and as you can see the version just pops up, so you
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can read all specifications and go back by using your back arrow
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Now let me show you how to open software and hardware information, so how to enter the
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main version menu, all you have to do is input the following code, star, hash, 1, 2, 5, 8
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0, star, 3, 6, 9, hash and as you can see the main version just pops up, so you can
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read some other specifications about your software and hardware. Let's go back and now let me show you how to enter the test mode, all you have to do
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is use star, hash, 7, 3, 5, 3, hash and as you can see test menu just pops up in front
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of you, you can test here some interesting features as melody, vibration, speaker, camera
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bluetooth, light sensor and some other stuff. Let's go back by using your back arrow again and now let me show you how to enter in other
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testing menu, all you have to do is input star, hash, 0, star, hash and as you can see
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the following menu pops up, you can test here for example the screen, so you can select
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red, green, blue, you can test receiver, vibration as well and also the speaker, the
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LED and some other stuff. Let's go back by using your back arrow and now let me show you how to enter the battery
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status menu, all you have to do is use the following secret code, star, hash, 0, 2, 2
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8, hash and the battery status just pops up. Let's go back and let me open the service mode, so let's input star, hash, 0, 0, 1
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1, hash and as you may notice the service mode just pops up, so you can read some interesting
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things about your service cell info. Let's go back, now let me open the USB status, so let's use star, hash, 0, 8, 0, 8, hash
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and USB settings just pops up, you can change here for example the mode of your USB
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Let's go back and at the end let me show you how to check the email number on this phone
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so all you have to do is use star, hash, 0, 6, hash and as you can see the screen with
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the email number and with the barcode and serial number just pops up in front of you
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To close this window simply tap OK. Let's go back and now you can use your device
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