In order to hard reset a Bird M11, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Bird M11 device will be brought back to the default configuration of a brand new device.
1. Start by turning your phone on.
2. Now, using your keyboard, type in one of these codes: *#77218114# or *#881188# or *#94267357# or *#9426*357# or *#19912006# or *#118811# or *#3646633#
3. Your phone should now reboot, which means that the hard reset is complete.