You can use the following steps to reset your phone in the boot status.
1) Go to “Settings”.
2) Touch “System”
3) Touch “Reset”.
4) Touch “Factory data reset” to start.
5) Touch “RESET PHONE” in the open window.
6) Touch “RESET PHONE” in the open window Second time.
Warning: this action will erase all your personal information and downloaded apps.
The function of long pressing the power button + volume button to enter the Recovery
Mode is not enabled in the current project.