Huawei nova 7i back button not show

Huawei nova 7i back button not show
This phone model is huawei nova 7i phone. now today i will show you how to show three back button on this phone display.
if you want to show three button on this phone display for this first you have to find the option called settings .and when find settings go to settings and when go to settings you find.
the option called system and update go to system update and see system and navigation then you have go system and navigation when go to system and navigation click three button and show three button on this phone display.
#huawei_nova_7i#back_button#not_show