Follow this link, you will get more information on Oppo Mirror 5S mobile
How to do Hard Reset in Oppo Mirror 5S mobile? a hard reset delete everything on your phone? Here are the best solutions to your problems.
Hard Reset
1.Power off your Oppo Mirror 5S Android Mobile.
2.Now Hold down the Volume Down + Power button for a few seconds.
3.Release both keys when you will see Logo appears on your screen.
4.Then, Select Language option, Using Volume Buttons and confirm with Power button.
5.Select and choose Wipe data/factory Reset option.
6.After, select the YES option and press Power button to confirm.
7.Finally Select reboot system now option.
8.Hard Reset Successfully completed on your mobile.
9.Great done!
Factory Reset
1.Now go to the Settings option.
2.Then choose the Additional Settings option.
3.Next, select the Backup & Reset option.
4.Now select the Erase all data(factory reset) option.
5.Again select the Erase all data option.
6.Now Tap on Erase data option.
7.Finally, Factory Reset Completed on your phone.
Thanks for watching.
source