In order to hard reset a Bleu 458X, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Bleu 458X device will be brought back to the default configuration of a brand new device.
1. Turn on the smartphone.
2. Open Settings and Restore Settings.
3. Tap in the phone's security password, 1122 by default.
4. Wait for the phone to reset and restart.