It will remove all the data ,contacts and apps that you installed
At the very beginning hold down the Power button to switch on the device
In the next step tap the following code in your phone: *2767*3855#
You should see information about resetting your phone.
Wait to comple the whole process.
Well done! Tha hard reset has just been performed.
If the device is off hold down the Power key for a short while.
From the Home Screen go to Menu and then to Settings.
Tap Reset and then select Master Reset.
In the next step choose Yes to confirm the whole operation..
To begin hard reset process type in the following safety code: 1234.
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Restore Hard reset will set your phone in origional factorry settings. It will remove all the data and apps that you installed. Your contacts will be removed and you have to add them again.