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Here I have Sony Xperia Z3 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. Let's open the phone dialer right here
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Let's use the following secret code. Let's start by using the service menu
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So let's type in asterix hash asterix hash 7378423 hash asterix hash asterix
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As you can see service menu just pops up. Here you can choose service info and you can for example read the model number, the software
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info, the simlock information, configuration and other stuff such as for example the factory
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charging firmware info and a lot of more. Let's go back and choose service settings
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Here you can change the network mode, the airplane mode. You may also go back and choose service test and here you can test a couple of things for
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example speaker, display, all colors of the display as you can see right here
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You may also test the keyboard, the earphone, microphone, vibrator, the camera, flash, wifi
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compass and a lot of more. Let's go back. You can also choose the customization settings
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So here you can accomplish the hard reset operation. Let's just be careful with that operation because you will lose all data if you perform
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the reset customization. Let's go back a couple of times to quit the service menu and now let me open the android
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testing menu. So let's type in asterix hash asterix hash 4636 hash asterix hash asterix
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As you can see the testing menu just pops up. Here you can choose phone information
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When you can read such stuff as email number, current network, signal strength, location
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You may 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, view service dialing numbers, get PDPs or
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enable data connection. Let's go back by using the back arrow. Let's choose the usage statistics
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Here you've got the list of all applications and you can read the last time used or usage time
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Let's go back again and this time let's choose the WiFi information
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Here you've got the WiFi API, WiFi configuration and WiFi status so let me show you all of them
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In WiFi API you can disable network, disconnect network, enable network, get configure networks
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or get connection info. In WiFi config you've got configure networks and in WiFi status you've got the statistics
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about your WiFi. You can refresh them or run a ping test. Let's go back a couple of times and let's use the keypad again
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Here let's open the calendar information. Let's type in asterix hash asterix hash 225 hash asterix hash asterix
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As you can see calendar info just popped up. If you have the google account added to your device you'll see more information
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Let's go back and let's open the google play service mode so let's use asterix hash asterix
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hash 426 hash asterix hash asterix. Here you have google play services so you can read here the ping, connect, disconnect events
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You can read the following information as well. Let's go back and this time let me open debug UI so let's type in the following code asterix
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hash asterix hash 759 hash asterix hash asterix. As you can see debug UI just pops up
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Here you can view client's ID's. You may also change OEM mode or for example read the current back off and next hour
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Let's go back, let's open the keypad and at the end let me just show you how to check email number by using a secret code so let's just simply type in asterix hash 06 hash and
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as you can see the window with the email number just pops up. You may simply close this by tapping OK
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So that's it, now you may go back to your home screen and you can use your device in a normal way
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