Question

How to open factory mode on my Mobile ?

Answer 1

Erase data using the Settings menu
To perform a factory data reset using the Settings menu, follow these steps:
Before you reset your Android One, see options for backing up your data.
On your mobile device, open the Settings menu Settings .
Under "Personal," touch Backup & reset. You may need to enter your pattern, PIN, or password.
Under "Personal data," touch Factory data reset.
Read the information on the screen and touch Reset phone.
If you have a screen lock, you'll need to enter your pattern, PIN, or password.
When prompted, touch Erase everything to erase all data from your device's internal storage.
When your device has finished erasing, select the option to reboot your device.
You'll see the Welcome screen just as you did when you turned the device on for the first time.

Answer 2

Opening factory mode is different for different mobiles all depending on the os of your mobile. If you are using an android phone turn it off and then press and hold the volume up+volume down+power button for 5 to 6 seconds and then you'll be in factory mode. In windows phone factory mode can be acessed directly by going to settings.