Learn how to perform a soft and factory reset of the device.
INSTRUCTIONS & INFO
A master reset reverts the device back to factory settings. It will permanently erase all personal data, preferences, settings and content such as pictures, ringtones and apps that are saved to the device. Data stored to an SD card will not be erased unless otherwise selected. It is recommended that you save (backup) important data to your SIM, SD card, or a computer before proceeding.
From the home screen, swipe down the Notifications bar.
Tap the Settings icon.
Scroll to and tap Privacy.
Tap Factory data reset.
Tap Reset phone.
If security is enabled, enter your unlock PIN, password, or pattern code.
If unable to reset the device using the above steps, try this alternate master reset method. With the phone off, press and hold Volume up + Volume down keys, and then press Power key. Release the Power key when your phone starts up, and release the Volume up and Home keys when the Android logo is displayed. Press the Volume down key to scroll to "wipe data/factory reset", and then press the Power key to select. Press the Volume down key to "Yes - delete all user data", and then press the Power key. When finished, press the Power key to reboot your phone.