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Here I have ZTE Blade V7 Lite 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 have to find and select the phone icon right here
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Let's activate a keypad. And here let's use the following secret code
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As you can see the testing menu just pops up
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Here you can navigate by tapping appropriate options. You can choose phone information
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When you can read all important stats about your device. You can read the email number, phone number, current network, signal strength, location
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You can also run a ping test or choose more key in order to select radio band, view sim
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address book, view fixed dialing numbers, get PDPs or enable data connection
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So let's go back to quit the phone info. And right here let's choose usage statistics
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From the usage statistics you can read the list of all applications and you can have
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access to the last time used and usage time. So let's go back again
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This time let's choose the WiFi information right here. And here you can choose the WiFi API when you can disable network, disconnect network
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enable network, get configured networks or get connection info. So let's go back one more time
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This time let's choose the WiFi config. And if you have some configured networks here you should see the full specification about them
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Let's go back again and choose WiFi status. As you can see this is the statistics list of your WiFi
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You can refresh your stats or run a ping test. Let's go back by using your back arrow
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And let me quit all testing menu. And this time let me show you how to check the calendar info on the following device
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So all you have to do is use this code. Star pound, star pound, 225 pound star, pound star
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As you can see the calendar info may pops up on the screen
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This is the calendar info. You can read the contacts, holidays in your country, the other calendar settings from
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your Gmail and from your device. So that's it. Let's go back
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Let's quit the calendar info. And this time let me show you how to open the Google Play services mode
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So let's use star pound, star pound, 426 pound star, pound star
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As you can see Google Play services just pops up. Here you can choose ping, connect, disconnect or events
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Let's go back again. And this time let me use the debug UI. So let's use the star pound, star pound, 759 pound star, pound star
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As you can see debug UI just pops up. Here you can view client's IDs
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You may also change the IEM mode and have access to this information
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Let's go back. And this time let me show you how to use the email info code
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So let's use star pound, 06 pound. As you can see the email number just pops up
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Let's tap OK to close this window. So that's it. Now you can go back and start using your device
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