In order to hard reset a Haier F1100, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Haier F1100 device will be brought back to the default configuration of a brand new device.
1. Hold down the Power button until the phone turns on.
2. Open Settings and choose the Restore factory settings option.
3. Finito - your phone should now reset and return to its default settings.