Hard Reset ZTE Blade VEC 3G

First method:

1. Firstly, switch off your phone by using Power Button.
2. After that, press and hold Power + Volume Up button together.
3. When you see Recovery Mode menu release held buttons.
4. From the menu choose "Wipe Data/Factory Reset" by using Volume buttons to scroll andPower button to select options.
5. Then confirm the whole operation by tappinng "yes".
6. Good job! The hard reset is done.

Second method:

1. If the display is off, press the Power button to turn it back on. 
2. Then find and select Settings and go to Backup & reset.
3. Choose the Factory Data Reset.
4. Tap Reset Phone. 
5. Select Erase Everything if you are sure you want to clear all your data. 
6. Success!

WARNING !
Hard Reset will erase all of your data
All described operations you are doing at your own risk.