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Here I have Huawei P20 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. Here you need to open the phone's dialer and let's use the first secret code
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So let me enter the project menu, this is like the service mode in Huawei devices
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Let's use asterix hash, asterix hash, 2846579, hash asterix, hash asterix
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As you can see the project menu just pops up, here you can navigate by tapping appropriate options
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For example you can choose the background settings and you can tap the background debug
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So here you can make it open if you'd like to. You can also change the USB port settings and use for example Google mode, Manufacture
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mode or HiSuite mode. Right now I'm using the HiSuite. Alright let's tap close
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You can also see the lock settings or set UI theme color
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Alright let's go back, let's choose the veneer information and here for example you may choose
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the version info, device processing data and right now you can read the bootloader version
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kernel version, CP version, EMUI solution version and other stuff as well
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Alright, use back key, you can also select the manufacturer info, other info, here you've
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got for example the serial number or you can verify your key
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You may also use the network information query, here you've got two most important things
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the simlock status, in my case the simlock is deactive, you can also check the vendor
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country info and you may go back. If you would like to, by using project menu you can try to upgrade your software, so you
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can do it by using your SD card. You can also accomplish the hard reset operation by choosing restore factory, but let's just
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be careful with that operation because you will lose all your data
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You may also select the battery charge if you would like to and read the battery level
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or battery temperature. So let me quit the project menu by using the back key and this time let me check out the
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about phone information, so let's use asterisk hash 0000 hash asterisk hash asterisk and
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the about phone pops up, here you can read the build number, hardware version and other
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stuff such as the email number. Alright let me quit the about phone and this time let me show you how to enter the Android
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test menu, so let's input asterisk hash asterisk hash 6130 hash asterisk hash asterisk
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The testing menu just pops up, here you can choose phone information and let's decide
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from which card, in my case it could be the first one. You can read here the email number, phone number, current network, signal strength, voice
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network type. You can also run a ping test or choose more key to view sim address book, view fixed daily
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numbers, view service daily numbers, get PDPs or enable data connection. Use the back key to quit this phone info, you may also here read the usage statistics
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and here you can read the last time used or usage time
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Alright let's use the back key, you can also select the WiFi information, here you've got
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access to WiFi API, when you can disable network, disconnect network, enable network, get configured
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networks or get connection info. Alright you can also choose the WiFi config, here you've got all configured networks from
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your device. You may also select the WiFi status and read the status of your WiFi
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You can refresh or start or run a ping test. Alright let's use the back key a couple of times to quit the Android testing menu
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And now it's time to enter the calendar menu, so let's enter asterisk hash asterisk hash
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225 hash asterisk hash asterisk, calendar info just pops up, you can read about some
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events from your device, from your contacts or from your Gmail account
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Alright let's go back. Now let me open the Google Play Service mode, so let's input asterisk hash asterisk hash
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426 hash asterisk hash asterisk. And Google Play Service just pops up, here you can choose ping, connect, disconnect events
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or status. That's it, let's use the back key. And at the end let me show you how to check email and serial number by using the secret
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code, so let's use asterisk hash 06 hash and the following info just pops up
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To close this window tap OK and now you can use your device in a normal way
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