In order to hard reset a Vodafone 845, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Vodafone 845 device will be brought back to the default configuration of a brand new device.
1. Turn off the phone.
2. Press & hold the Call + Volume Up + Power buttons.
3. Wait for the phone to reset and restart. Done.