A Soft Reset (or Forced Restart) differs from a Hard Reset (or Factory Restore) in that it doesn’t delete any essential data from the smartphone or tablet but you may lose some RAM or temporary data, for example any unsaved game progress or the page you were viewing on a website.
A Hard Reset on the other hand would only be required when you want to wipe all data from the device, starting it over.
1. First thing that is needed to perform soft reset is unlocking your screen and then holding down power button.
2. Hold this button untill you will see this menu.
3. Tap on the Reboot to finish the process and soft reset your phone.
4. That was it, your phone is now restarting and will be ready to use very soon.