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Good I have Xiaomi Mi 6 and let me show you how to use secret codes on the following device
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So first of all let's start by using a home screen. At the very beginning let me open the phone's dialer right here and let's use the first
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secret code so let me open the testing menu. Let's use star hash, star hash, 4636, hash star, hash star
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As you can see testing menu just pops up, here this is the main menu of the testing menu
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Here you can navigate by tapping appropriate options, let's choose the phone information
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at first and you can read such things as email number, phone number, current network, signal
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strength, location and other specifications. You can also run a ping test or tap more key in order to view SIM address book, view fixed
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dialing numbers, view service dialing numbers, get PDP list or enable data connection
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So let's go back and from the following menu let me choose the battery info, here you can
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read the battery status, power plug, battery level, battery scale, battery health, battery
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voltage, battery technology, time since boot and even the battery temperature. Let me go back and let's choose the user statistics, here you've got the list of all applications
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from your device and you can read such things as last time used or usage time
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So let's go back again and here let's choose the Wi-Fi information and let's select the
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Wi-Fi API, sometimes it didn't work on the Xiaomi and here you can for example enable
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the connection, you can get connection info and other stuff. You can also go back and choose Wi-Fi config and here you should find the specification
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or your configured networks. Let's go back and let's choose the Wi-Fi status, here you have the statistics about your Wi-Fi
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you can refresh them or run a ping test. Let's go back couple of times, this time let me close the testing menu and now let's open
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the hardware test, so let's input star hash, star hash, 64663, hash star, hash star
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As you can see hardware test just pops up, here you can check the version info for example
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and you have to choose pass or fail, you can also check the sim card, let me choose pass
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the vibration, the main microphone and other stuff. If you would like to go back let's choose the back arrow right here, here you've got
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the results of the test, you can also test the sensors, the display, the headphone, Wi-Fi
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Bluetooth, charger, camera and other stuff. You may also tap more key and choose additional tools and here you can perform for example
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the Bluetooth test tool, Wi-Fi tool, the speaker calibration and other stuff
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Let's go back by using your back arrow, if you would like to quit this let's use the
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back arrow a couple of times and tap ok to clear the test of the following features
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And then you have to input the code that allows you opening the calendar info, so let's
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use star hash, star hash, 225, hash star, hash star. As you can see calendar information just pops up, you can read such things as events from
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contacts, from your country and from other stuff. 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. And the Google Play services just pops up, here you can choose ping, connect, disconnect
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or events. Let's go back again, this time let's open debug UI, so let's use star hash, star hash
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759, hash star, hash star. And the debug UI just pops up, you can read the specification, you can change the IEM
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mode or for example view client's IDs. 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 the email number just pops up, let's tap ok to close this
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So let's go back and now you can use your device, everything went well, thank you for
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