The 'lighter' of the two reset options. It can be done either in settings or via the recovery menu. It wipes all user data and firmware settings but leaves the contents of your internal SD Card intact.
Restores a smartphone to its basic factory settings, which erases all applications that were installed by the user as well as all user data. Hard Reset wipes everything including the contents of your internal SD Card. Whatever firmware you last flashed will be the firmware you get back, but everything else will be wiped.
Clear? Ok, let's proceed with the Hard Reset for the Google Nexus 5.
- From a powered off state, press the Power button to start your Nexus 5. When you see the Google logo press and hold the Volume Down key and release when the device vibrates.
- Use the volume keys to highlight Recovery Menu and press the Power button to select. This will bring you to a screen with an Android on its back.
- Hold the Volume Up key for 5 secs then release and a new menu will appear.
- First off, you can use the volume keys to select Wipe Cache Partition. This will cause your phone to restart. once this is done, re-do the previous steps to get back to the same screen (the one that Wipe Cache Partition was on).
- Highlight Wipe Data/Factory Reset and select using the Power key. Scroll down to Yes, Delete All Data and press the Power button again to select.
- Your Nexus 5 will now wipe your data and reformat.
- On the next screen hit the Power button to select Reboot System Now.
Let us know if you have any questions or problems.
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