In order to hard reset a Lenovo LePhone S2, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Lenovo LePhone S2 device will be brought back to the default configuration of a brand new device.
1. Turn the device off by holding down the Power button.
2. Hold down Power & Volume Down buttons simultaneously for ten seconds.
3. Now you have to select Clear eMMC option. Do that by navigating through the options with Volume Down and selecting the right one with Power button.
4. Good job, your phone will now reset and restart, thus completing the hard reset process.