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Hello, I'm LGG4 and let me show you how to enter the service menu on the following device
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So at the very beginning let's start by using your home screen. Let's tap apps icon, find and select the settings, tap general and before you enter your secret
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code you need to check out one thing here. Let's open the about phone and let's check out the hardware info
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Here you should find the model number so you need to remember these numbers at the end
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of the model so 815. So let's remember your model number 815 and now let's open the phone's dialer and let's
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use the secret code. Asterix hash 546368 hash asterix
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Now let's enter your ending so 815 and hash. That's it, the hidden mode pops up, here you can navigate by tapping appropriate options
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So you can here tap for example the device test and you can here choose SAAT test so
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you can perform some service auto test or some service manual test, let me use manual
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one so you can use the display check right here, tap pass, here you should find all colors
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of your screen, you can also test the ring, the vibrator, if everything is alright let's
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just tap pass and you can test the loopback, motion, camera, FM radio, LED
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You can also go back and see the version of your test and some optional tests right here
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Let's go back and let's now choose ELT test, here you can also perform the automatic test
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or you can choose manual, let me tap manual, here you can also test the ringtone, the vibrator
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camera, loopback, all you need to do is just choose and tap test start
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That's it, let's go back. Now let's open service menu, here you can check out the version info, firmware version
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the kernel version and other stuff, you can also go back and here you can perform factory
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reset, you can test the battery, you can test LCD, so this is very useful menu, let's go
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back and you can also use field test to test the browser, LTE and other network settings
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That's it, if you would like to quit the hidden mode let's use back key a couple of times
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and now you can use your device in a normal way. So thank you for watching, please subscribe our channel, leave thumbs up under the video
