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. So lets get started, please unlock your device and press and hold power button.
2. Once you will se this menu, you can release the power button.
3. Now all you have to do is tap on Reboot/Restart option to finish.
4. And done! The whole soft reset process is complete.
Sometimes your phone is not responding due to some application or other problem, in this situation you can reboot your phone.
If you want to erase your all data from your phone then you should go with factory setting restore.
This option will erase your all data.