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Here I have Xiaomi Pocophone F1 and let me show you how to open the hardware test mode
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on the following device. So at the very beginning let's start by using your home screen, let's open the fonts dialer
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and let's use this secret code. Asterix hash, asterix hash, 64663, hash asterix, hash asterix
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As you can see the following hardware test mode pops up, here you can check the version
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info, so checkout email, serial number and other stuff, if everything is correct let's
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choose pass. Now the device is looking for a sim card, choose pass or fail
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So here you can also use the vibrator test, choose the continue vibrator interval or no
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vibrator, then tap pass if everything is correct, here you've got the notification, light, test
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You can also go back and for example choose the receiver test, choose the numbers and
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if the numbers are correct let's tap pass. So here you can also test the speaker, choose numbers, tap pass and you can test other stuff
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such as the wifi, bluetooth, the accelerator, light sensor, the charger, camera, GPS, battery
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and other stuff as well. You can also use more key and choose additional tools, here you can select such stuff as get
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locks, wifi test tool, touch sensor, proximity sensor or you can for example calibrate speaker
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So that's it, if you would like to quit the hardware test mode let's use bug key a couple
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of times, let's tap ok to exit test and everything went well
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