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Here I have Xiaomi Redmi 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 right here
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And here you can use all secret codes that you know. So let's start by using the testing menu, the Android testing menu
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So let's use star, pound, star, pound, four, six, three, six, pound, star, pound, star
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As you can see testing menu just pops up. Here you can choose phone information, when you can read all important stuff about your
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device such as the signal strength, location, roaming, JSM service, the current network
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and other stuff as well. You can also choose more and view SIM address, book view, fix dialing numbers or for example
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get PDP list. So let's go back and now you can choose also the battery info, when you can read all important
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information about your battery. You may also choose the usage statistics and here you've got such stuff as last time use
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and usage time of all applications of your device. You can also choose VLAN information and you can choose WiFi IP, when you can disable
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network, disconnect network, enable network, get configured networks info or get connection info
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You may also choose VLAN config and here you can read all important stuff about configured networks
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You may also select the VLAN status when you can refresh the statistics about your WiFi
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or you can also run a ping test. Let's go back a couple of times, let me quit the Android testing menu and this time let
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me open the hardware test mode. So let's use star pound, star pound, 64, 663, pound star, pound star
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As you can see the hardware test mode just pops up. Here you can check the software version, you can choose OK or Error
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You may also test the colors of the screens right here
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You have to choose OK or Error. Here you've got the touch panel, self test and other stuff
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Let me go back. As you can see here you've got the results. You can also test such things as Bluetooth, WiFi, light sensor, proximity, touch panel
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LED, fingerprint, accelerator and other stuff as well. Let's quit this testing menu
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You may also open the calendar info, so let's use star pound, star pound, 225, pound star
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pound star. As you can see calendar info just pops up, you can read the following information from
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the following menu. Let's go back and this time let me open the Google Play services mode, so let's use star
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hash, star hash, 426, hash star, hash star
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And sometimes Google Play services just pops up right here. And you may also use the debug UI, so you can use star hash, star hash, 759, hash star
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hash star. And in some of the Xiaomi devices you can use the debug UI menu
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At the end let me show you how to check the email number by using a secret code, so let's
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use star hash, 06, hash. And as you can see the email number and the other info just pops up right here
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Let me tap OK to close this menu and you can go back and start using your device
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