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Here I have Huawei Nova 3 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 using your home screen. Let's open the phone's dialer, let's activate the keypad and let's use the first secret code
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Asterix hash, asterix hash, 28, 46579, hash asterix, hash asterix
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As you may notice the project menu just pops up in front of you. So here you can navigate by tapping appropriate options
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Let's choose the background settings at first. Here you can open the background debug and you can make it open or close
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You can change USB port mode, you can also make AP lock open and you can set UI theme color
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Alright, let's go back. You can also read some venue information such as the version info
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Here you may get access to the bootloader version, kernel version or for example CP
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version of your device. Here you've got the full list. Let's go back
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You can also check the manufacturer info, here you've got the list
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The other info for example serial number or run mode. If you would like to you can also verify your key
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Let's go back. You can also open the network information query. Here you've got access to two very important things for example the simlog info
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As you can see my device doesn't have the simlog. You can also read the vendor country info right here and tap close if you would like
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to close this menu. Let's go back and then let me show you other things
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For example you can update your device by using software upgrade. Here you can upgrade your software by using SD card
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You can also accomplish the hard reset by choosing restore factory. But let's just be careful with that one because you'll lose all your data if you perform this
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operation and you can also read the battery charge information such as the battery level
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or the battery's carry. Let's go back. Let me quit the project menu and this time let me show you how to open the calendar info
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So let's use asterix hash, asterix hash, 225, hash asterix, hash asterix
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As you may notice the calendar info just pops up in front of you
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Let's go back to quit this mode. This time let me open the Google Play service mode
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So let's use asterix hash, asterix hash, 426, hash asterix, hash asterix
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And Google Play services just appears in front of you. Here you can read and use the ping, connect, disconnect events or status
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That's it. Now let me show you how to easily get access to about phone info
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Let's just use asterix hash, asterix hash, 0000, hash asterix, hash asterix
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As you can see the about phone just pops up. Here you can read such stuff as hardware version, build number, email number or your model
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Let's go back. At the end let me show you how to check the email number by using the secret code
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So let's use asterix hash, 06, hash. And the email number of your device just pops up
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Here you may also read your serial number. Tap OK to close this and that's it
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