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Here I have Samsung Galaxy A3 2016 and let me show you all secret codes that works on
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this device. At the very beginning let me start by using my home screen, let me find the phone's icon
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right here to open the phone's dialer and let's use the secret codes that works on this device
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At first let me check the version of the phone so let's input star hash, 1,2,3,4 and the hash
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The version of the device just pops up, you can read this information and go back by using
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your back arrow. Now let's open the software and the hardware info so the main version of the device, let's
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input star hash, 1,2,5,8,0, star, 3,6,9 and hash
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As you can see the main version just pops up so here you've got some more detailed information
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about your device. If you would like to go back let's use your back arrow
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Now it's time to enter the testing menu so let's use the star hash, 7,3,5,3, hash
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As you can see the testing mode just pops up, here you can test some features and some
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hardware from the following phone, for example the melody, vibration, speaker, timing, the
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camera and also the other stuff, for example you can test the bluetooth, dot mode, accelerator
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sensor, light sensor and other stuff. Let's go back by using your back arrow, now it's time to enter another secret menu, another
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testing menu, let's use star hash, 0, star hash. As you can see now you can test some more things, for example all colors of your screen
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the red, green, blue, you may test the receiver, for example you may also test the sub key
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all keys from your device, excellent let's go back and other stuff such as the sensor
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timing, vibration, mega cam, low frequency and some more. Let's go back and now it's time to enter the service mode so let me open the phone's dialer
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and use the following secret code, star hash, 0, 0, 1, 1, hash
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As you can see service mode just pops up, here you can read all specific information
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about your device, for example the frequency, the email status, you may also choose more
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and for example get some help or end the process. Let's go back
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Now let me show you how to open the battery status, let's use star hash, 0, 228 and hash
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The battery status of your device just pops up, here you can read such things as the level
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of the battery, level block, current, charger and other stuff. Let's go back
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Let me open the USB settings mode, let's use star hash, 0, 8, 0, 8 and hash
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As you can see USB settings just pops up, here you can change the mode of the USB
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Let's go back and at the end let me show you how to check email number, let's use star
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hash, 0, 6, hash and the email number just pops up on the screen
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In order to close this simply tap OK. Excellent, let's go back and now you may start using your device in a normal mode
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