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Here I've got a Samsung Galaxy S20 Ultra and let me show you secret codes that you can
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use on this device. So at first you have to open your phone dialer and let me start with the first code, the
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shortest one. It is asterisk pound or six pound. And as you can see, this one will provide you with unique numbers assigned to your device
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like email number or serial number. Tap on OK to go back and now it's time for the second code and it is a bit longer
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It's asterisk pound, one, two, three, four, pound. And here you can check your firmware version, smoothly enter this code and just after that
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you're provided with the firmware version of your Samsung Galaxy S20 Ultra
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Another code, it's super useful one, it's my favorite one. It's asterisk pound or asterisk pound
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And here you can test your device, you can check all the features
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So let me show you, for example, display test. So red, green, blue and also black is for display
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So let me click here. So as you can see, it is working properly
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Then green, good as well, blue, perfect and black. It is also working fine, just tap on power key to switch it off
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Also you can check the receiver. As we all can hear, it's working properly
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Then vibration, you can hear it, I can both hear and feel it
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It is also working properly. And then just pick whichever app you would like to check, whichever feature and test it
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So let me go back. That would be all for this code. And another one is asterisk pound, double O, double one, pound
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And here you've got service mode, so smoothly check the details, tap on more icon if you
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would like to come along with some further details. So let me go back
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And then another code, the longest one, I think it's asterisk pound, two six, eight
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three, double six, two and pound at the end. And here we've got the service mode
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And also by tapping over here, you can activate back, key input, select help and also wifi
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So let's click here and here we've got wifi information. Another code is asterisk pound, zero, double two, eight, pound
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And here you've got the battery status, so you can read here current voltage, label
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label block, average voltage, smoothly click, enter this code and then read all the dates
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regarding your battery. And another code, still not the last one, is asterisk pound, zero, eight, zero, eight, pound
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And here you've got the USB settings, so if you would like to change it, smoothly mark
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the one that you would like to have, the setup that you would like to apply, and then go
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back, it will be saved. And the last code is asterisk pound, two, double six, three, and pound at the end
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And here we've got the advanced firmware version, so smoothly enter this code and read all further
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details regarding your firmware. If you would like to refresh wifi version, click here and it can be smoothly done
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So that would be all. These are all secret codes that you can use on your device, on your Samsung Galaxy S20 Ultra
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