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I have Huawei Mate 20 Pro 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 and let's start with the first secret code
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Asterix pound, asterix pound, two eight, four six five, seven nine, pound asterix, pound asterix
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That's it. The project menu pops up. This is the most useful secret code, the most useful hidden mode
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Here you can navigate by tapping appropriate options. You can choose background settings and for example make background debug open
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You can change USB port settings. Here you can select the USB mode
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You can also use AP lock settings and also make it open
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That's it. Let's go back. Here you can also check out the veneer information
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For example the version info on the device's processing data. Right here you've got the information
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For example the bootloader version, kernel version and other stuff. Let's go back
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You can also check out manufacturer info right here and other info
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You can also verify key if you would like to. So now let me open network information query
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Here you've got two important things. Simlog info and as you can see in that case Simlog is deactive and the vendor country
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info right here. Alright, let's go back. You can also accomplish updating the device by using software upgrade by memory card
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You can accomplish the hard reset by choosing restore factory. Let's just be careful with that operation because you will lose all your data if you
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perform that. You can also choose battery charge and you can read the battery level and battery temperature
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Alright let's go back. Let me quit the project mania and it's time to open the about phone
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So let's use this code. Asterix pound, asterix pound, zero zero, zero zero, pound asterix, pound asterix
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About just pops up. So you can just open this section by using this secret code and you can read here build
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number, hardware version and other stuff. Let's go back. It's time to open Google Play service mode
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So let's use asterix pound, asterix pound, four two six, pound asterix, pound asterix
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Google Play service just pops up. Here you can choose ping, connect, disconnect, events or status
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Let's go back and you may also here open the calendar info so let's use asterix pound, asterix
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pound, two two five, pound asterix, pound asterix. Calendar info pops up so everything went well
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Let's go back. At the end let me show you how to check out the email number and serial number by using
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a secret code so let's use asterix pound, zero six, pound. And the email and serial just pops up
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Let's tap ok to close this window and basically everything went well. Thank you for watching
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