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Here I have Huawei Y6 II and let me show you how to use secret codes on the following phone
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At first you have to unlock the screen, open the phone's dialer by using a call button
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right here and here you should input all the secret codes that works on this device
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Let's start the engineering mode so let's type in star hash star hash 2846579 hash star hash star
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As you can see engineer mode just pops up. You can choose for example settings
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When you have locked setting here you can choose whatever you want
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Let's go back. You can also choose phone info check right here and you can for example check hardware
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info right here and read all specification about your device. You can also other check and here you have such stuff as email number, serial number
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or something like that. Let's go back. You can also choose network settings and here you can for example check sim lock status
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As you can see sim lock is unlocked. Let's tap ok. You can also choose operators and info check right here
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As you can see country in my case is Europe. Let's go back
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You can also check upgrade by tapping the following option. You can upgrade by using your SD card but let me skip it and let me choose cancel
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You can also choose recovery option but this option results in hardest operation so be
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careful with that. You can also choose battery charge menu but of course in order to do it you have to connect
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your charger. Let's go back to Fonts Dialer and let me show you another secret code
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Let's type in star hash star hash 0000 so four zeros and then hash star hash star
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As you can see the about font option just appears on the screen
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You can read model number, build number, hardware version or email numbers
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Let's go back to Fonts Dialer and now let me open test menu
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So let's type in star hash star hash 6130 hash star hash star
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As you can see a testing menu just pops up. You can choose for example phone information
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Let's go back. Battery information and here you can read all important stuff about your battery
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For example battery level, battery scale, battery health or even a battery temperature
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Let's go back. You can choose usage statistics and here you've got all apps from your device and you can
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read last time use or usage time. Let's go back to Fonts Dialer and now let me show you one of the most popular android
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secret codes which is star hash 06 hash and as you can see the email number just pops
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up on the screen. You can read these numbers or quit the following mode by simply tapping OK. Excellent
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