In order to hard reset a Vodafone 555 Blue, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Vodafone 555 Blue device will be brought back to the default configuration of a brand new device.
1. Power down the phone.
2. Press'n'hold the G + Power buttons.
3. Phone will now restart.