In order to hard reset a BLU Swing, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
BLU Swing device will be brought back to the default configuration of a brand new device.
1. First, press'n'hold the Power button until the phone turns on.
2. Start by entering Menu. Then go to Settings > Reset Factory Settings .
3. Next thing to do is to tap Reset Factory Settings. Continue by selecting All.
4. Enter the security lock code (1122 by default), select OK.
5. The phone is now returning to its default state. Grats.