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I've got OnePlus 7 Pro and let me show you how to activate the test mode on the following device
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So at first, let me open the phone dialer and then enter a secret code, which is asterisk
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pound 808 pound. And now we are in testing mode. Let me enter it
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So at first you can go for the assembly test project. So as you can see, you've got plenty of them
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You can perform them if you want to. And the second tab is device debugging
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So here you can perform fingerprint test, keyboard test, vibration test, touchscreen
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test, charger test, and all the others. For example, you can test OTG connection, light sensor, M sensor, G sensor, and all
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the others. So let me pick, for example, touchscreen test and let me select handwriting
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So the very first one. So as you can see, it is working properly
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Here is the resolution. So let's go back. Maybe you would like to check some other tests
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For example, keypad test. So let me check if volume up is working correctly
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Yes, it is. Then volume down, power, do not disturb mode, normal
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And as you can see, all the keypads works correctly. Let me enter and let's go further
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So as you can see here, you've got all the device debugging tests. You can perform them
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Then you've got the camera over here. So you can test your camera
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You can pick a rear camera preview, second back camera preview, third back camera preview
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front camera preview, and all the others. For example, flashlight test, optical image stabilizer, and all the others
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Let me go further. You've got media debugging, so you can go to the echo test, single recording test, and
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all the others. As you can see here, you've got plenty of this. So if anything is not working correctly, you will definitely find the proper tests here
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So you'll be able to check if it's the feature to blame or just some of the application
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And let's go to WCN. So here you can search Bluetooth device
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You can perform Wi-Fi test, Wi-Fi remote test, and also you can check your GPS signal
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And then finally, we've got communication debugging. So you can perform here your call test, SIM card test, NFC test, Bluetooth remote control
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test, standby current test, and all the others with LTE included. And the last tab is the others
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So as you can see here, are all those tests which were not included previously
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For example, screen always on, screen blacklist test, cover test, and plenty of other very
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useful features test, for example, root status test. So you can perform it
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Then you can also reboot your device into the bootloader if you want to
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You can check the software version over here and clear all data in your phone over here
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So that's it. This is how you can use the test mode. You can enable it whenever you want to, whenever you need to
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So that's it. Thank you for watching. Please subscribe our channel and leave the thumbs up
