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Here I have LG Key Free and let me show you how to use secret codes on the following phone
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So at the very beginning let's use your power key just to switch on your device then unlock
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the screen. Let's use a phone's dialer by using that icon right here
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Let's activate keypad and now let me show you the first secret code which is the testing
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menu code so let's input star hash, star hash, 4, 6, 3, 6, hash, star, hash, star
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And that's it. As you can see the testing menu just pops up in front of you
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You can navigate here by tapping appropriate options so you can choose the phone information
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when you've got all important information about your device. You can choose battery information and read such things as battery status, power plug
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battery scale or even a battery temperature. You can go back and choose usage statistics and here you have the full list of applications
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that you have used on this phone and you can read such things as a counter or usage time
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Let's go back to the previous page and choose WiFi information. Here you can select WiFi API where you can disable network, disconnect network, enable
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network, get configured networks or get connection info. You can choose WiFi config where you have all specifications about configured networks
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so you can read and use them. You can also go back and choose WiFi status when you can refresh all stats about your
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WiFi and run a ping test. Let me go back. Let's close the testing menu by using your back arrow and let's go back to the keypad
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Now all you have to do is enter the following code. Star hash, star hash, 225, hash star, hash star
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And as you can see the calendar info just pops up in front of you so you can read some
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specific information about your calendar, for example about holidays in your country
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Let's go back. Now let me open a Google Play services mode
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Let's input star hash, star hash, 426, hash star, hash star
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And that's it. Google Play services just pops up. You can choose from the main bar the ping, connect, disconnect or events
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Let's go back. Now let's open debug UI so let's use star hash, star hash, 759, hash star, hash star
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And debug UI just pops up. You can, for example, view client's IDs right here
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Let's close this window and let's go back. And let me also show you how to check email number by using a secret code so let's input
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star hash, 06, hash. And the email number just pops up on the screen
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You can close this window by simply tapping OK. And that's it
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