1) Switch off the mobile and wait around 10-15 sec
2) This is important point for Xiaomi Mi 4s smartphone Keep in same time Volume (+) and power buttons in same time. After 3 second release the power button Then you will face the display below as like as android recovery screen.
3) Now press and hold the Vol (+) Button and hold it, see the factory reset menu is active now.
4) Now press the power button for android recovery option and conform.
5) From the menu items you should select wipe data-factory reset and press power button for confirm it.
6) On the next steps the android recovery option want from you conformation you want to factory reset your android device? IF you select “Yes” then all data will delete from your Smartphone.
7) Wait some time work is running after done the factory reset the phone again show android recovery option; now you should select reboot the mobile via volume (+) or (-). After selecting press power button and your android device is reboot now.
8) All work is done!!! Now see your mobile is same as new cell phone. Setup step by step like just new android phone setup.
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