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. Unlock your screen and hold down your power button.
2. When you will see this menu on your screen then you can release the button.
3. Now tap on the reboot or restart option from the menu to finish soft reset process.
4. And done! Your phone should work faster after the restart.