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Here I have Samsung Galaxy Xcover 3 and let me show you how to use secret codes on the
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following device. So at first let me use power key to switch on my phone and enable the lock screen
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So then from the home screen let's tap phone icon in that corner to open the phone dialer
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And now let's use the following secret codes. At first let's start by checking the version so let's input star hash 1,2,3,4 hash
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And as you can see the version of our device just pops up on the screen
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In order to close this window simply tap back arrow right here
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Now let me show you how to check software and hardware information
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So all you have to do is use the following combination of keys
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Star hash 1,2,5,8,0 star 3,6,9 hash
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As you can see the main version just pops up. You can read here a couple of interesting information about your device
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Let's go back and now let me show you how to open the test mode
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So let's input star hash 7,3,5,3 hash
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And as you can see the test mode just pops up. You can test here some interesting features
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For example the melody. You can choose speaker
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You can also test camera
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And you can also test some other features such as for example Bluetooth, Dot mode and
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some other interesting things. Let's go back. Now let me show you how to open another test mode
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Let's input star hash 0, star hash. And as you can see the following menu just pops up
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You can navigate here by tapping appropriate options. And some tests also appears in that menu
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For example the vibration
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Let's wait. You can also for example check blue. And here you have your blue screen
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You can check green. This is your green screen. And here you have some other interesting features such as sensor, speaker, receiver, sub key
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and some other interesting features that you can test on your device
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So let me go back and let me show you another secret code
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So let's open the phone's dialer by using your back arrow. And now let me show you how to open the service mode
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So let's input star hash 0, 0, 1, 1, hash. As you can see service mode just pops up
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You can choose more right here. And you can for example choose help, wifi, key input, bug and some other interesting things
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Let's go back. And let's open the battery status. So let's use star hash 0, 2, 2, 8, hash
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And as you can see the battery status just pops up. You can choose quick start right here
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And as you can see this is the information about process. So if you would like to perform this tap ok
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If not let's choose cancel. And now let me show you another secret code
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Let me show you how to check and change USB settings. So let's input star hash 0, 8, 0, 8, hash
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And as you can see you can check the USB settings and for example check the mode of the USB
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Let me go back and let me show you the last secret code which is the email code
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Let's input star hash 0, 6, hash. And as you can see the email number just pops up
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You can also read the serial number and you can also read the barcodes of this number
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So if you would like to quit this mode simply tap ok. And now you can go back and use your device
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