At times your device may begin to exhibit abnormal behavior or stop functioning as expected. As with any Operating System, when all other troubleshooting steps have failed to resolve your issue, you may need to completely reset the device.
There are two methods for performing a Factory reset, which will bring your device to Out of the Box settings, and reset your OS to factory defaults.
The best way to perform a reset is Settings > Backup & Reset > Factory data reset.
*** It is important to note a Factory Reset will erase all user data and information from the device ***