In order to hard reset a Bleu 151X, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Bleu 151X device will be brought back to the default configuration of a brand new device.
1. Turn on the device.
2. Open Settings and select Restore Settings.
3. Tap in the security password, 1122 by default.
4. Wait for the device to reset and restart. Done.