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. Start from unlocking your screen and holding down your power button for few seconds.
2. This should lead you to opened up menu looking like this:
3. You have to tap on Reboot or Restart option to end the process.
4. Just wait for your device to restart and you're done, good job.