Soft resets are usually conducted in an attempt to fix malfunctioning applications or because they're required for software installation.
Soft reset contrasts with hard reset, which removes all user data, settings and applications and returns a device to the same state it was in when it shipped from the factory.
1. Soft reset starts from unlocking your screen and holding down power button.
2. Now as soon you will see this menu you can release the power button.
3. Then you have to tap on Reboot or Restart option from the menu.
4. And this is it! soft reset is done and your device will be ready to use very soon.