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Here I've got Sony Xperia L4 and let me show you how to use secret codes on the following device
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So at first you have to open your phone dialer, go to keypad 10 and let me start with the
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first code, the shortest one, which is asterisk pound, 06 pound. And here it is, as you can see right in front of you, you've got both email numbers and
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also serial number assigned to your Sony Xperia L4. Tap on OK to go back and now let's go to the second code, it is asterisk pound, asterisk
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pound, 4636 pound asterisk, pound asterisk. And now we are in testing mode performed by Google and here we've got phone information
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user statistics and also Wi-Fi details, so let me start with phone info
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And here you've got email number, phone number, if your SIM card is included, current network
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signal strength, voice service, data service, voice network type, data network type and
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so on. If you would like to run a ping test, just tap on Run ping test and here you've got the
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results and below you've got some other details. Then under user statistics you can find a report from your apps, so if you'd like to
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check last time used or users time, you've got everything right here
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So this is it and if you will click on Wi-Fi information, you will be able to check Wi-Fi
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APA with all disabled network, disconnected network, enabled network, configured networks and also the whole connection info
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Then under Wi-Fi configuration you've got all configured networks, so the currently
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networks are included here and then under Wi-Fi status you can simply refresh it and
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check the details. This mode also allows you to perform a ping test, just tap here and here it is
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So that would be all for this one. Another code is asterisk pound, asterisk pound, 426, pound asterisk, pound asterisk
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And as you can see here, you've got diagnostic mode, here you can check events and status
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and if you'd like to activate advanced view, just tap on the more icon and then select
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advanced view right here. And from now on you'll be able to check some further details
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So that would be all for this one. Another code is asterisk pound, asterisk pound, 225, pound asterisk, pound asterisk
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And as you can see here, you've got the calendar info, so all celebrations, events and so on
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are included here. You will not forget about any upcoming event or anniversary, smoothly enter this code and
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all the celebrations, all important dates will be stored in one place
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So that would be all for this one. And here we've got the last one and also the longest one
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It is asterisk pound, asterisk pound, 737, 842, 3, pound asterisk, pound asterisk
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And here we've got service menu where you can check service info, just click here and
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now you can check model info. You've got the model, software info, sim lock details and so on
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You can check the configuration, factory charging, firmware info, MAC addresses, security and
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also certificates. And then the second super useful feature is service test
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So just click here and in this mode you can test your device. So you can check if all the features are working properly
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For example, if you'd like to check your speaker, just click on speaker
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And as we can all hear it is working properly. Then you can check also the vibration, click on start test and it is working properly
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We can check it by tapping on the keys. Definitely. Good. And then you can also check the camera, airphone, LED, Bluetooth and so on
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Let me pick for example battery health test. As you can see the battery is in a good condition, no need to replace it
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And for example, let me check a real time clock. And it's also okay
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So this is it. Just pick the feature that you would like to test, click on it and then check the current
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state of this feature. And that will be all. These are all secret codes that you can use in your Xperia L4
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