The Hard Reset is also commonly known as factory reset. This tutorial will show you the easiest way to perform a factory reset operation in ZTT V1. Find out the way to remove all personal data, customized settings and installed apps from ZTT V1.
As a result your Vendor will run faster, you will be able to use the entire MB storage and Li-Ion None mAh battery will work longer. Let's restore defaults in ZTT V1 and enjoy using your phone as it comes from the manufacturer.