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Here I have Huawei A7G620X 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 open the phone's dialer right here, then let's use the following
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secret code, asterix hash, asterix hash, 28, 465, 79, hash asterix, hash asterix
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As you can see the following mode pops up, this is the main menu of the following mode
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The testing menu, here you can choose MMMI test, you can select here project menu, in
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project menu you can choose the background settings right here, for example the charging
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protection switch, system sleep indicator, USB port settings and other stuff. Let's go back, you can also have the veneer information query, here you can for example
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use the manufacturer information right here. You can also choose the network settings and here for example you can see the simcard lock
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state query, in my case my simlock is deactivated. You can see the operator and the country info
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You may also go back and choose restore factory defaults but let's just be careful with that
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operation because you will lose all data if you perform this operation
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You can also choose the upgrade and try to upgrade the device by using the SD card or
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by using the backup and restore option. Let's go back one more time, you can also see the battery charge control, here you've
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got the information about your battery, the battery temperature, the battery level
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Let's go back, you can also open the charging information right here and this is the same
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battery charge control. So let's go back a couple of times by using the back key to quit the testing menu
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And now let me show you how to open the Android testing menu, so let's use the asterisk hash
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asterisk hash, 6130, hash asterisk, hash asterisk. As you can see here you can navigate by typing appropriate options, you can choose phone
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information and read such stuff as email number, phone number, current network, signal strength
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You can also run a ping test if you would like to
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Let's go back, let's choose the battery information and here you've got also the battery info
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that suggests the battery level, battery scale, battery health or for example the battery technology
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Let's go back by using the back key a couple of times, let me quit the testing menu
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This time let me show you how to open the about phone options, so let's use the asterisk
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hash, asterisk hash, 0000, hash asterisk, hash asterisk
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As you can see about phone just pops up, you can read the model number, build number, hardware
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version of the email info. Let's go back again and this time let me show you how to open the calendar information
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let's use asterisk hash, asterisk hash, 225, hash asterisk, hash asterisk. And the calendar info just pops up in front of you, you can read about contacts, about
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the events from your Google account, from your device and other stuff as well
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Let's go back by using the back key right here. This time let me show you how to open the Google Play service mode, so let's use asterisk
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hash, asterisk hash, 426, hash asterisk, hash asterisk. Google Play services just pops up, here you can choose ping, connect, disconnect, events
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status and read this information. Let's go back again and this time let me show you how to open the debug UI mode, so let's
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use asterisk hash, asterisk hash, 759, hash asterisk, hash asterisk
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And debug UI just pops up, here you can view client's IDs, change OEM mode or read such
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stuff as current back off or next alarm. Let's go back by using the back key right here
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At the end let me show you how to check the email number by using the secret code, so
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let's use asterisk hash, 06, hash and the email number just pops up, so let's tap OK
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to close this, now you can go back and start using your device in a normal way
