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Here I have Sony Xperia Z Ultra and let me show you how to enter service mode on the
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following phone. So at the very beginning from the home screen let's open the phone's dialer by using a phone
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icon in that corner. Then let's activate keypad by using this orange button right here and let's input a secret
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code that allows you open a service menu. So let's use star hash, star hash, 7378423, hash star, hash star
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As you can see service mode just pops up in front of you. You can navigate here by tapping appropriate options
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Let's choose at first for example service info. Here you've got such things as model info, software info, simlog, configuration, factory
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charging, DTCP IP and firmware info or landmark addresses. So let me show you for example how to check simlog info right here and here you've got
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the counter of your attempts and of your networks and some other stuff
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Let's go back. Let me choose service settings and here you can enable or disable such mode as airplane
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mode and network mode. If you tap on network mode here you have all network modes that you can use
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For example you can only use LTE. So let's tap cancel and let's go back to the previous page to open service tests
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Here you've got all features that you can test on your phone. For example you can test speaker
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Let's go back. You can test camera right here
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You can also test bluetooth. Of course you have to be visible on your bluetooth
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So let me tap deny for now. And that's it. You can test also some other interesting features
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Let me go back. Wait a few seconds. Excellent. Let's go back and choose service tests or customization settings, the last option
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And you have to be really careful with that option because this operation will reset all
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network settings, all personal data and all customization settings. So if you don't want to perform a hard-ass operation don't use this option
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And let me go back. If you would like to quit this mode simply use your back arrow a couple of times and
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now you can use your phone. Thank you for watching. Please subscribe our channel and leave thumbs up under the video
