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Here I have Coolpad Max and let me show you secret codes that works on the following phone
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At the very beginning open the phone's dialer. And this is the place where you should input all secret codes that you know
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The first one is to enter a testing menu. So you have to input the following code
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As you can see the testing menu just pops up and you can choose phone information and
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read everything about your phone. You can run a ping test from this point or for example turn off the radio
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You can go back to main menu and choose battery information and read such things as battery
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level, battery health or for example battery temperature. You can go back to previous menu and choose usage statistics and here you have list of
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applications from your device and last time use and usage time. If you go back and choose WiFi information you can select WiFi IP, WiFi config and for
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example WiFi status. When you can also run a ping test or refresh all stats about WiFi
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Let's go back to phone's dialer and let me show you the most common and useful Android
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secret code which is star hash 06 hash. Of course that code reads email numbers from your device
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