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Here I have Xiaomi Redmi 6A and let me show you how to use secret codes on the following device
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So at the very beginning let's start by unlocking the screen, let's open the phone's dialer
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and let's start with the first secret code, so let me open the hardware test mode
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So let's enter the following code, asterix hash, asterix hash, 64663, hash asterix, hash asterix
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As you can see the MMI group pops up, this is the test mode that you can use
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Here you can perform the auto test, but you can also check the version info, for example
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the dual sim card test, you can pass fail or power pass, you can test your LCD, so you
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can test all colors of your screen, you can test your charger, battery, wifi, bluetooth
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GPS, proximity, speaker for example, also the receiver, headset and other stuff
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You can also use here more key in order to check the version info, here you put for example
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serial number, email number and other stuff. You can also see the manufacturer info and the hardware information right here
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So that's it, let me quit this hardware test mode and now let me show you how to enter
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the testing menu, so let's use this code, asterix hash, asterix hash, 4636, hash asterix
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hash asterix. As you can see the following testing menu pops up, so here you can navigate by typing
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appropriate options, for example you can check the phone information, such as the current
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network, signal strength, data service. You can also here run a ping test and use the following options
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You may also see here the following menu and here you can choose for example view sim address
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or view fixed dialing numbers, view service dialing numbers or enable data connection
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So let's go back and here you can also check the battery info, so here you can select the
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battery status, battery square, battery half or battery temperature. You may also check other stuff such as the usage statistics and here you can read the
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list of all apps and you can get access to the following info such as the last time use
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or usage time. You may also check the WiFi info, here you can use the WiFi app and you may disable network
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disconnect network, enable network, get configure networks or get connection info. You can see also the WiFi config, here you've got configure networks and the WiFi status
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So this is the list of the WiFi statistics, let me go back, let me quit the testing menu
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and you may also enter the calendar info, so let's use this code asterix hash, asterix
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hash 225 hash asterix, hash asterix and the calendar info pops up, so here you can read
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about the events from your calendar. Let's go back. You may also enter the Google Play services mode, so let's enter the following code asterix
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hash, asterix hash 426 hash asterix, hash asterix. That's it, the Google Play services pops up, here you can read the following info such
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as the ping, connect, disconnect events or status of your device. Let's go back, let's enter right now debug UI, so let me enter this code asterix hash
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asterix hash 759 hash asterix, hash asterix and sometimes the debug UI menu may pops up
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it depends of the version of your device. And at the end let me show you how to check email number by using the secret code, so
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let's use asterix hash 06 hash and the email number pops up in front of you, let's tap
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OK to close it. And basically that's it, everything went well, thank you for watching
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