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. Soft reset was always easy and I'm going to guide you through it. Please unlock your screen and hold power button down.
2. Hold it untill you see this menu on the screen:
3. Then to finish press on Reboot or Restart option.
4. Now all you have to do is wait for your phone to restart, good job.