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Here I have Samsung Galaxy A3 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
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Here you have to open the phone's dialer by using the phone icon, let's activate the keypad
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and let's use the following secret code. Start pound, 1, 2, 3, 4 and pound
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As you can see the version pops up, here you can read the AP number, CP, CSC model
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Let's go back, let's open the main version, so the software and hardware info, let's use
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start pound, 1, 2, 5, 8, 0, start, 3, 6, 9, pound
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As you can see the main version just pops up, here you can also have access to AP, CP
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and you may also choose for example the RF call. Let's go back, this time let me open the test mode, so let's use the start pound, 7, 3
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5, 3, pound. As you can see the test mode just pops up, here you can test the melody, vibration, speaker
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dimming, camera and other stuff such as for example Bluetooth, proximity sensor, light sensor
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Let's go back, this time let me also show you how to open another testing menu, let's
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use start pound, 0, start pound and the following mode pops up, here you can test the color
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of the screen, the red, green, blue, you may test the receiver, vibration, the sleep, touch
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speaker, low frequency and other stuff as well. So let's go back and let me just choose the brightness of the screen and this time let
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me show you how to enter the service mode, so let's use start pound, 0, 0, 1, 1 and pound
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As you can see the service mode just pops up, here you can read the instruction about
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your service mode, here you can get the information, you may also choose more key in order to use
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the key input or for example the help. Let's go back and this time let me show you how to enter the battery status, so let's
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use the start pound, 0, 2, 2, 8 and pound. This is the battery status, so you can read the information about your battery such as
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the average value, current value, voltage and other stuff. Let's go back again, this time let me show you how to enter the USB settings mode, so
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let's use start pound, 0, 8, 0, 8 and pound. This is the USB settings mode, so you can choose the USB mode and you can change some settings
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Let me go back again and this time let me show you how to enter the email mode, so let's
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use start pound, 0, 6, pound and the email number and the serial number just pops up
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you may also use the barcode to this number. Let's tap OK to close this
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Let's go back and now you may use your device, so thank you for watching, please subscribe our channel and leave thumbs up under the video
