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. To start a soft reset you will have to unlock your screen and hold down the power button.
2. If you will see this menu, you can let of the power button.
3. Here you only have to tap on Reboot or Restart option.
4. And this is the end. Your phone should work now a little bit faster.