Samsung Galaxy S4: How to Turn Off the Screen Manually or Automatically

A huge screen owned by the Samsung Galaxy SIV surely will be able to improve the users' experiences of using this phone. But, in other side, the huge screen is a part of this phone that consume most of battery. Luckily, this phone has come with some options that will help their users to reduce battery consumption by the screen. One of which is a screen mode that will allow you to change the