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Here I have Lenovo FAB and let me show you all secret codes that works on this device
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At first let's unlock the screen, open the phone's dialer and here you should input
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all secret codes. Let's start with the software version so let's input the following code, hash, hash, hash
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hash, 0, 0, 0, 0, hash. As you can see the software version just pops up, to close this window just tap OK
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Then let's open the factory mode so let's input hash, hash, hash, hash, 1, 1, 1, 1, hash
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The factory mode just pops up, as you can see the whole menu is in Chinese
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You can go back by using the arrow at the bottom of the screen
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Then tap the left button and use the arrow one more time
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Excellent, let's input another secret code, this time to check serial number so let's
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input hash, hash, hash, hash, 2, 2, 2, 2, hash. And the serial number just pops up, tap OK to confirm it
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Then let's open engineer mode so let's use hash, hash, hash, hash, 3, 3, 3, 3, hash
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And such tools just pops up, you can use them or you can simply quit them by using
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arrow button right here. Now let me show you the factory reset, you can also do a hard reset by secret code by
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inputting hash, hash, hash, hash, 7, 7, 7, hash. And as you can see the wipe user data by factory mode just pops up
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To accomplish hard reset just tap OK and to cancel just tap cancel, let me cancel
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And let me show you another secret code, this time internal version so let's input hash
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hash, hash, hash, 5, 9, 9, 3, hash. And the internal version just pops up
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To close this window just tap OK. Now let's open version information so let's input hash, hash, hash, hash, 8, 3, 7, 5, hash
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And the baseband version just pops up. To close this window just tap OK
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And at the end let me show you the most common and useful Android secret code which is star
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hash, 0, 6, hash and the email number just pops up. To close this window just tap OK
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